* Few issues identified in BOT in reopening the issue on gerrit activity
=> When an old PS (tagged with issue number) is abandoned, BOT reopens
the issue considering some activity on the issue in gerrit.
=> When a PS is merged and closed by BOT, in the next run if it identifies some
event due to Post/Promote Job, then the issue is immediately re-opened.
Relates-To: #502
Change-Id: Id8516fb10c812873f1b4e4c3f2794845e29824d6