mine.get unable to target with mine cache data.

Description of Issue

Hi,

Trying to do mine.get and it is not returning results when using grain targeting. This is a multimaster setup with etcd for the cache.

Targeting with glob works; Targeting with grains or compound does not work.

Works:
salt-call mine.get '*' grains.item

Does not work:
salt-call mine.get 'cpuarch:x86_64' grains.item grain
salt-call mine.get 'G@cpuarch:x86_64' grains.item compound

Setup

Minion mine config:

mine_interval: 5
mine_functions:
  grains.item: [fqdn, ipv4, fqdn_ip4]

Steps to Reproduce Issue

salt-call mine.get 'cpuarch:x86_64' grains.item grain

Versions Report

Minion:

Salt Version:
Salt: 2019.2.2

Dependency Versions:
cffi: Not Installed
cherrypy: Not Installed
dateutil: Not Installed
docker-py: Not Installed
gitdb: Not Installed
gitpython: Not Installed
ioflo: Not Installed
Jinja2: 2.7.2
libgit2: Not Installed
libnacl: Not Installed
M2Crypto: Not Installed
Mako: Not Installed
msgpack-pure: Not Installed
msgpack-python: 0.5.6
mysql-python: Not Installed
pycparser: Not Installed
pycrypto: 2.6.1
pycryptodome: Not Installed
pygit2: Not Installed
Python: 2.7.5 (default, Aug 7 2019, 00:51:29)
python-gnupg: Not Installed
PyYAML: 3.10
PyZMQ: 15.3.0
RAET: Not Installed
smmap: Not Installed
timelib: Not Installed
Tornado: 4.2.1
ZMQ: 4.1.4

System Versions:
dist: centos 7.7.1908 Core
locale: UTF-8
machine: x86_64
release: 3.10.0-1062.1.1.el7.x86_64
system: Linux
version: CentOS Linux 7.7.1908 Core

Master:

Salt Version:
Salt: 2019.2.2

Dependency Versions:
cffi: Not Installed
cherrypy: 17.4.2
dateutil: 2.6.1
docker-py: Not Installed
gitdb: Not Installed
gitpython: Not Installed
ioflo: Not Installed
Jinja2: 2.10
libgit2: Not Installed
libnacl: Not Installed
M2Crypto: Not Installed
Mako: Not Installed
msgpack-pure: Not Installed
msgpack-python: 0.5.6
mysql-python: Not Installed
pycparser: Not Installed
pycrypto: 2.6.1
pycryptodome: Not Installed
pygit2: Not Installed
Python: 2.7.17 (default, Nov 7 2019, 10:07:09)
python-gnupg: 0.4.1
PyYAML: 3.12
PyZMQ: 16.0.2
RAET: Not Installed
smmap: Not Installed
timelib: Not Installed
Tornado: 4.5.3
ZMQ: 4.2.5

System Versions:
dist: Ubuntu 18.04 bionic
locale: UTF-8
machine: x86_64
release: 4.15.0-76-generic
system: Linux
version: Ubuntu 18.04 bionic

Start with the mine.get entry point and the mine cache path, then reproduce the two grain-targeting commands from the issue in the multimaster etcd setup. Compare them with the working glob-targeting command; done means grain and compound targeting return the expected mine data.