Fix indentation issues reported by flake8

- E121 continuation line under-indented for hanging indent
- E122 continuation line missing indentation or outdented
- E125 continuation line with same indent as next logical line
- E126 continuation line over-indented for hanging indent
- E127 continuation line over-indented for visual indent
- E128 continuation line under-indented for visual indent
- E129 visually indented line with same indent as next logical line
- E131 continuation line unaligned for hanging indent

Fixed automatically with autopep8:

  git ls-files | grep py$ | xargs autopep8 --in-place \
    --select E121,E122,E125,E126,E127,E128,E129,E131

Change-Id: Ifd95fb8e6a1a4d6e9de187b5787d64a6326dd249
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/254605
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: David Pursehouse <dpursehouse@collab.net>

gitc_utils.py

@@ -52,7 +52,7 @@ def _set_project_revisions(projects):
                                        project.remote.url,
                                        project.revisionExpr],
                                       capture_stdout=True, cwd='/tmp'))
-      for project in projects if not git_config.IsId(project.revisionExpr)]
+                     for project in projects if not git_config.IsId(project.revisionExpr)]
   for proj, gitcmd in project_gitcmds:
     if gitcmd.Wait():
       print('FATAL: Failed to retrieve revisionExpr for %s' % proj)