This one is pretty silly; hopefully the regex match is still specific
enough to be a good test.
% bash -c '/tmp/someenv/bin/pip install something'
bash: /tmp/someenv/bin/pip: No such file or directory
% zsh -c '/tmp/someenv/bin/pip install something'
zsh:1: no such file or directory: /tmp/someenv/bin/pip
* In order to check if something went wrong while running the various pip commands using the command module, we need to know, at least, the return code, this way we can report the failure.
* `salt.modules.pip.uninstall()` now returns the `cmd.run_all` `dict` instead of a list of strings. **This breaks previous behaviour**.
* Added a test case for `salt.modules.pip.uninstall()` changes.
Some packages, carbon and graphite-web for example, install their packages to a specific root, using a `virtualenv` or not. `pip freeze` won't show those packages as installed.
* Moved the state `pip.installed` tests to it's own module, the correct one.
* Added a test which checks for the presence of errors while running `pip.installed` introduced while fixing #2028
