Update the GCE guide with a working configuration.

Update guide_gce.rst

Update developing_modules.rst

broken link in developing_modules.rst

Small typo in galaxy.rst

Resolve issue where repo_path contains multiple '.git' strings

Update community.rst

Resolve #9223 Fix test for python 2.6

The existing description does not make 2 things clear.
1) This is an environment variable
2) It must be set on the _controlling_ host, not the remote host.

link to core modules source is broken since restructuring of public ansible repos

other SCM sourced in line 96

Fixes #9219

Add a new inventory parameter (ansible_sudo_exe) to specify sudo command...

* trivial test refactor to allow for python 2.6 compat

If the repo_path contained multiple '.git' strings, the _git_repo_info()
call resulted in a traceback.  This change removes the trailing '.git'
and resolves the traceback.

Fixes https://github.com/ansible/ansible/issues/9202

Also remove a few whitespaces, improve the bash script and fix a typo.

Clarify which of the options to pick.

typo fix

Fixes #6407

Remove references to old module dir from .spec

Changes include:
 * Remove references to old module dir from .spec
 * Use setuptools find_packages find all ansible packages