changes to env_args to append data 1)In run_sanity routine if feature is set to upgrade env_args has been overwritting
changes to env_args to append data
1)In run_sanity routine if feature is set to upgrade env_args has been overwritting

Closes-Bug: #1528113
Change-Id: Ia88d0e8999bdcfecdc3cb32d63e9d469c38ac8b9

Juniper/contrail-fabric-utils,Juniper/contrail-fabric-utils