android_gerrit: Rewrite and unify all gerritreview handling
android_gerrit: Rewrite and unify all gerritreview handling

Change-Id: I3ef307aae01fc37474dccf4361f181e5093a63ba
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools