Fix command for zypper
Fix command for zypper

The "$(command) -v zypper" is incorrect, it returns " -v zypper".

Change-Id: I03cffbe187a4fedd962ba3e96c5b7c9c0cda40f9

openstack/refstack-client,stackforge/refstack-client,openstack/refstack-client,stackforge/refstack-client