CBQE-0: update old testcfg with new params

When a new param is added to testcfg add it to backed up testcfg

Change-Id: I67e13aeb3308bd9841b66a8d6cf8d566918cdd88
Committer: tommie@couchbase.com
Reviewed-on: http://review.couchbase.org/26270
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Tommie McAfee <tommie@couchbase.com>