* Add config params for custom refspecs
* Add exceptions for errors encountered modifying git config
* Make the refspecs a configurable parameter
* Make refspecs a per-remote parameter
* Update master config template to include custom refspecs opts
* Add documentation for new config params
* Update GitFS walkthrough with a section on custom refspecs
* Remove dulwich support from salt.utils.gitfs
Dulwich still lacks important features, including (but not limited to)
the following:
- Lack of the necessary support for checking out a ref needed for
git_pillar/winrepo support
- No support in its config objects for multivar git config items, making
it impossible to detect when repos have multiple refspecs set for a
given git remote
Given this information, and the fact that it trails as a distant third
to Pygit2 and GitPython, Salt will cease to support Dulwich as a git
interface moving forward.
* Excise references to dulwich from documentation
* Add mention of custom refspecs to Nitrogen release notes
* Add gitfs_refspecs to mocked opts in gitfs integration tests
Also remove dulwich from unit tests
* Add information about opts argument not being intended for CLI use
Naively comparing sorted dict keys does not guarantee that maps are equal. We
must compare mtimes for filenames in case keys are the same to make sure there
isnt a modified file.
