bug 2873 - keep going even if gerrit already exists
bug 2873 - keep going even if gerrit already exists

Change-Id: I7a83546ea04e911483d37397b8e788eca042971f
Reviewed-on: http://review.membase.org/3430
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>
Tested-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

daverigby/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,membase/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,nimishzynga/ns_server,ceejatec/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,membase/ns_server,daverigby/ns_server,pavel-blagodov/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,ceejatec/ns_server,ceejatec/ns_server,nimishzynga/ns_server,membase/ns_server,nimishzynga/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,membase/ns_server,nimishzynga/ns_server,daverigby/ns_server,nimishzynga/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,mschoch/ns_server,membase/ns_server,daverigby/ns_server,daverigby/ns_server,mschoch/ns_server,nimishzynga/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server