This commit adds a utility to download multiple patch files from Gerrit
by a change list query.
Test: repo_patch.py -g [gerrit] [query]
Change-Id: I3685c48d2ea4e5a9fa1915c4e31bc6ebb2d4ed97
This commit adds a search on Gerrit Code Review URL so that a better
error message can be shown to users and the setup instructions can be
presented.
Test: repo_pull.py json -g [gerrit] [query]
Test: repo_review.py -g [gerrit] [query] -l Code-Review 2
Change-Id: I1f819c51e34c573f526ca3e30e237cdaf8a27160