commit a2e61a5eb03e503d09003a8a37f1cf0737353c0c (HEAD, origin/master, origin/HEAD, master)
Author: gaurav [GS00347734@techmahindra.com]
AuthorDate: Thu May 5 03:39:31 2016 +0530
Commit: Gerrit Code Review [gerrit@onlab.us]
CommitDate: Fri Jun 3 22:22:59 2016 +0000

clean up the SingleSwitchFibInstaller, added the predeactivate hook and modified unit test CORD-663

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