PyTest, test to cover VM creation a ovs nets

	- test_osm_01_create_vm -> add 2 host and create one vm with dhcp
	- test_osm_02_create_2_vm_ping_btw -> add 2 host and create two vm with dhcp and check ping between both vm.
	- test_osm_03_test_service_openvim -> restart a service and check net status

	- The test regresion launch the repo service and use the openvim CLI client available in the repo.

Change-Id: I3cb3c047fbd871f6d3a0c152dc6643a3248835d6
Signed-off-by: mirabal <leonardo.mirabal@altran.com>