eslint with yarn pnp

## Information

**VIM version**

VIM - Vi IMproved 8.1 (2018 May 18, compiled Jun 15 2019 16:41:15)
Parches incluidos: 1-875, 878, 884, 948, 1046, 1365-1368, 1382, 1401

Operating System: Debian Buster 10.2

## What went wrong

Hi, for some time I've been using yarn v2 or yarn with pnp (depending the ptoject), eslint is installed as a devDependency, so to use eslint I must execute ```yarn run eslint```, to solve this with ALE I've set this variables:

```
let g:ale_javascript_eslint_executable = 'yarn'
let g:ale_javascript_eslint_options = 'run eslint'
```
No problem for a long time, few days ago I updated ALE, through vim-plug and the linter stop working, after doing some search in the source core and :AleInfo, I realized now Ale search for the **node_modules** path to execute eslint, but for me it doesn't work because I don't have node_modules directory.

I don't know if there is a way con configure ale to work with yarn pnp but if one sets a executable for eslint, ALE shouldn't search for node_modules, neither change the path before eslint execution.

For now I just commented the ```l:cd_command``` in the return from ```function! ale#handlers#eslint#GetCommand(buffer) abort```

## Reproducing the bug
The root directory is ~jcmunoz/DropBox/Develop/node.js/tests

```
mkdir ale_test
cd ale_test
yarn init -y
yarn --pnp
yarn -D add eslint eslint-plugin-prettier prettier
```
add package.json config for eslint:
```
"eslintConfig": {
"root": true,
"env": {
"node": true,
"es2017": true,
"commonjs": true
},
"plugins": [
"prettier"
],
"extends": [
"eslint:recommended"
],
"rules": {
"no-console": 0,
"max-len": [
"error",
{
"code": 120,
"ignoreComments": true
}
],
"prettier/prettier": [
"warn",
{
"printWidth": 120,
"tabWidth": 2,
"bracketSpacing": false
}
]
},
"parserOptions": {
"ecmaVersion": 2018,
"ecmaFeatures": {
"jsx": true,
"es6": true
},
"sourceType": "script"
}
}
```
edit a new file test.js
```vim test.js```
add simple code:
```
"use strict";
let test = 1;
```
### :ALEInfo

Current Filetype: javascript
Available Linters: ['eslint', 'fecs', 'flow', 'flow-language-server', 'jscs', 'jshint', 'standard', 'tsserver', 'xo']
Enabled Linters: ['eslint', 'fecs', 'flow', 'flow-language-server', 'jscs', 'jshint', 'standard', 'tsserver', 'xo']
Suggested Fixers:
'eslint' - Apply eslint --fix to a file.
'fecs' - Apply fecs format to a file.
'importjs' - automatic imports for javascript
'prettier' - Apply prettier to a file.
'prettier_eslint', 'prettier-eslint' - Apply prettier-eslint to a file.
'prettier_standard', 'prettier-standard' - Apply prettier-standard to a file.
'remove_trailing_lines' - Remove all blank lines at the end of a file.
'standard' - Fix JavaScript files using standard --fix
'trim_whitespace' - Remove all trailing whitespace characters at the end of every line.
'xo' - Fix JavaScript/TypeScript files using xo --fix.
Linter Variables:

let g:ale_javascript_eslint_executable = 'yarn'
let g:ale_javascript_eslint_options = 'run eslint'
let g:ale_javascript_eslint_suppress_eslintignore = 0
let g:ale_javascript_eslint_suppress_missing_config = 0
let g:ale_javascript_eslint_use_global = 0
let g:ale_javascript_fecs_executable = 'fecs'
let g:ale_javascript_fecs_use_global = 0
let g:ale_javascript_flow_executable = 'flow'
let g:ale_javascript_flow_ls_executable = 'flow'
let g:ale_javascript_flow_ls_use_global = 0
let g:ale_javascript_flow_use_global = 0
let g:ale_javascript_flow_use_home_config = 0
let g:ale_javascript_flow_use_respect_pragma = 1
let g:ale_javascript_jscs_executable = 'jscs'
let g:ale_javascript_jscs_use_global = 0
let g:ale_javascript_jshint_executable = 'jshint'
let g:ale_javascript_jshint_use_global = 0
let g:ale_javascript_prettier_options = '--tab-width=2'
let g:ale_javascript_prettier_use_local_config = 1
let g:ale_javascript_standard_executable = 'standard'
let g:ale_javascript_standard_options = ''
let g:ale_javascript_standard_use_global = 0
let g:ale_javascript_tsserver_config_path = ''
let g:ale_javascript_tsserver_executable = 'tsserver'
let g:ale_javascript_tsserver_use_global = 0
let g:ale_javascript_xo_executable = 'xo'
let g:ale_javascript_xo_options = ''
let g:ale_javascript_xo_use_global = 0
Global Variables:

let g:ale_cache_executable_check_failures = v:null
let g:ale_change_sign_column_color = 0
let g:ale_command_wrapper = ''
let g:ale_completion_delay = v:null
let g:ale_completion_enabled = 0
let g:ale_completion_max_suggestions = v:null
let g:ale_echo_cursor = 1
let g:ale_echo_msg_error_str = 'Error'
let g:ale_echo_msg_format = '%code: %%s'
let g:ale_echo_msg_info_str = 'Info'
let g:ale_echo_msg_warning_str = 'Warning'
let g:ale_enabled = 1
let g:ale_fix_on_save = 0
let g:ale_fixers = {'json5': ['prettier'], 'vue': ['eslint'], 'json': ['prettier'], 'html': ['prettier'], 'javascript': ['eslint']}
let g:ale_history_enabled = 1
let g:ale_history_log_output = 1
let g:ale_keep_list_window_open = 0
let g:ale_lint_delay = 200
let g:ale_lint_on_enter = 1
let g:ale_lint_on_filetype_changed = 1
let g:ale_lint_on_insert_leave = 1
let g:ale_lint_on_save = 1
let g:ale_lint_on_text_changed = 'normal'
let g:ale_linter_aliases = {}
let g:ale_linters = {}
let g:ale_linters_explicit = 0
let g:ale_list_vertical = 0
let g:ale_list_window_size = 10
let g:ale_loclist_msg_format = '%code: %%s'
let g:ale_lsp_root = {}
let g:ale_max_buffer_history_size = 20
let g:ale_max_signs = -1
let g:ale_maximum_file_size = v:null
let g:ale_open_list = 1
let g:ale_pattern_options = v:null
let g:ale_pattern_options_enabled = v:null
let g:ale_set_balloons = 0
let g:ale_set_highlights = 1
let g:ale_set_loclist = 1
let g:ale_set_quickfix = 0
let g:ale_set_signs = 1
let g:ale_sign_column_always = 0
let g:ale_sign_error = '>>'
let g:ale_sign_info = '--'
let g:ale_sign_offset = 1000000
let g:ale_sign_style_error = '>>'
let g:ale_sign_style_warning = '--'
let g:ale_sign_warning = '--'
let g:ale_sign_highlight_linenrs = 0
let g:ale_statusline_format = v:null
let g:ale_type_map = {}
let g:ale_use_global_executables = v:null
let g:ale_virtualtext_cursor = 0
let g:ale_warn_about_trailing_blank_lines = 1
let g:ale_warn_about_trailing_whitespace = 1
Command History:

(executable check - success) yarn
(finished - exit code 1) ['/bin/bash', '-c', 'cd ''/home/jcmunoz/Dropbox/Develop/node.js'' && ''yarn'' run eslint -f json --stdin --stdin-filename ''/home/jcmunoz/Dropbox/Develop/node.js/tests/ale_test/test.js'' < ''/tmp/vShsxKu/4/test.js''']

<<>>
yarn run v1.21.1
error Couldn't find a package.json file in "/home/jcmunoz/Dropbox/Develop/node.js"
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
<<>>

(executable check - failure) fecs
(executable check - failure) jscs
(executable check - failure) jshint
(executable check - failure) standard
(executable check - failure) tsserver
(executable check - failure) xo