CLOUDSTACK-5146: Removing basic and sg tags from the test
 case which is invalid for the basic zone

TestRouterRestart.test_01_restart_network_cleanup test scenario is invalid for basic zone. The test case tries to restart the Router assigned to individual account but in basic zone, there is only one router i.e of shared network and there is only one guest(shared) network per zone. Hence the API fails to list the router of the individual account.

More over, we will not try to restart the Router of the shared network because it is used by many accounts and restarting it may affect the execution of other test cases.
Cloudstack-5077:  reserve cpu and memory only when
 vmware.reserve.cpu/mem are set to true. Insted of setting
 the ovecommit values to one on upgrade, we popultate them
 from the global values.
Signed off by : nitin mehta<nitin.mehta@citrix.com>