Poetry cannot add ssh urls from Azure Devops due to their URL

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Windows 10 and Ubuntu 18.04
• Poetry version: 1.0.10
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/ShadowWolf/d96a51b85c484fc9cc1b5b9d9ca8247f

Issue

When running a command to add an SSH link to an Azure DevOps private repo, poetry cannot parse their SSH urls because they are very weird and have port-like identifiers that aren't ports in them.

For example something like this:
poetry add git+ssh://git@ssh.dev.azure.com:v3/[CompanyName]/[Project Name]/[Repo Name] -vvv

I also found it will fail if the path includes urlencoded elements, such as something like this:
poetry add git+ssh://git@ssh.dev.azure.com:v3/MyCompany/My%20Project/some-random-repo

 ~/poetry-test  poetry add git+ssh://git@ssh.dev.azure.com:v3/[CompanyName]/[ProjectName]/[repo-name] -vvv
Using virtualenv: /home/bryanwolf/.cache/pypoetry/virtualenvs/poetry-test-VRaqNbsu-py3.8

[CalledProcessError]
Command '['git', '--git-dir', '/tmp/pypoetry-[repo-name]uas8kco8/.git', '--work-tree', '/tmp/pypoetry-git-[repo-name]uas8kco8', 'checkout', 'ssh.dev.azure.com:v3/[CompanyName]/[ProjectName]/[repo-name]']' returned non-zero exit status 1.

Traceback (most recent call last):
  File "/home/bryanwolf/.poetry/lib/poetry/_vendor/py3.8/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "/home/bryanwolf/.poetry/lib/poetry/_vendor/py3.8/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "/home/bryanwolf/.poetry/lib/poetry/_vendor/py3.8/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/home/bryanwolf/.poetry/lib/poetry/_vendor/py3.8/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/home/bryanwolf/.poetry/lib/poetry/console/commands/add.py", line 95, in handle
    requirements = self._determine_requirements(
  File "/home/bryanwolf/.poetry/lib/poetry/console/commands/init.py", line 293, in _determine_requirements
    requires = self._parse_requirements(requires)
  File "/home/bryanwolf/.poetry/lib/poetry/console/commands/init.py", line 380, in _parse_requirements
    package = Provider.get_package_from_vcs(
  File "/home/bryanwolf/.poetry/lib/poetry/puzzle/provider.py", line 207, in get_package_from_vcs
    git.checkout(reference, tmp_dir)
  File "/home/bryanwolf/.poetry/lib/poetry/vcs/git.py", line 217, in checkout
    return self.run(*args)
  File "/home/bryanwolf/.poetry/lib/poetry/vcs/git.py", line 284, in run
    subprocess.check_output(["git"] + list(args), stderr=subprocess.STDOUT)
  File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/home/bryanwolf/.poetry/lib/poetry/utils/_compat.py", line 205, in run
    raise CalledProcessError(

I think maybe this could be fixed by changing the pattern_formats by adding [v|V]? to port and % to path?

pattern_formats = {
    "protocol": r"\w+",
    "user": r"[a-zA-Z0-9_.-]+",
    "resource": r"[a-zA-Z0-9_.-]+",
    "port": r"[v|V]?\d+",
    "path": r"[\w~.\-/\\%]+",
    "name": r"[\w~.\-]+",
    "rev": r"[^@#]+",
}

Start in poetry/vcs/git.py, especially the URL pattern_formats shown in the issue, and reproduce the failure with the provided poetry add git+ssh command. Done means Azure DevOps SSH URLs, including encoded path elements and the v3 identifier, are parsed correctly and the repository checkout succeeds.