18 Test cases in the test_egress_fw_rules.py script fails if the guest network is any network other than 10.1.1.0/24 network. The script assumes the guest network to be 10.1.1.0/24 network. Added code to the test suite so that the test cases will work for isolated guest network with any network cidr.

Signed-off-by: Nitin Mehta <nitin.mehta@citrix.com>
CLOUDSTACK-6168: fixed the description for global config "vm.instancename.flag" - the flag is applicable for VMware hypervisor only