add back the deleted parameter in the configuration group tests

with the parameter deleted we can not rerun the tests on the same
instance without clearing the datstore_configuration_paramters
table and reloading the params. This will readd the parameter
that is deleted.

Change-Id: Ic1cdfa416a14c42b6c4323612ec609915224b6ee
Closes-Bug: #1379083
Merge "add back the deleted parameter in the configuration group tests"