A new helper module for easier interaction with Git repositories.
Provides GitRepo class that represents one local Git repository clone.
The GitRepo class currently only has one method, run_cmd(), for running
arbitrary git commands in the repository. More specialized methods for
commonly used git operations can be added later.
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
