Merge pull request #732 from willthames/fix_git_fail_json

Fixes for git module when it fails.

git

@@ -163,24 +163,24 @@ def main():
     if not os.path.exists(gitconfig):
         (rc, out, err) = clone(repo, dest)
         if rc != 0:
-            module.fail_json(out=out, err=err, rc=rc)
+            module.fail_json(msg=err)
     else:
         # else do a pull   
         before = get_version(dest)
         (rc, out, err) = reset(dest)
         if rc != 0:
-            module.fail_json(out=out, err=err, rc=rc)
+            module.fail_json(msg=err)
         (rc, out, err) = pull(module, repo, dest, version)
 
     # handle errors from clone or pull
     if out.find('error') != -1 or err.find('ERROR') != -1:
-        module.fail_json(out=out, err=err)
+        module.fail_json(msg=err)
 
     # switch to version specified regardless of whether
     # we cloned or pulled
     (rc, out, err) = switch_version(module, dest, remote, version)
     if err.find('error') != -1:
-        module.fail_json(out=out, err=err)
+        module.fail_json(msg=err)
 
     # determine if we changed anything
     after = get_version(dest)