Fix flake8 warnings for some files

Change-Id: If67f8660cfb0479f0e710b3566285ef401fcf077
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/355969
Tested-by: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Mike Frysinger <vapier@google.com>

command.py

@@ -320,7 +320,8 @@ class Command(object):
       for arg in args:
         # We have to filter by manifest groups in case the requested project is
         # checked out multiple times or differently based on them.
-        projects = [project for project in manifest.GetProjectsWithName(
+        projects = [project
+                    for project in manifest.GetProjectsWithName(
                         arg, all_manifests=all_manifests)
                     if project.MatchesGroups(groups)]