smurugap/changes reqd for ovsdb over ssl with contrail

## changes reqd for ovsdb over ssl with contrail
To generate certs:
apt-get install openvswitch-common
ovs-pki init
ovs-pki req+sign vtep
scp vtep-cert.pem root@<tor>:/var/db/certs
scp vtep-privkey.pem root@<tor>:/var/db/certs

QFX Config:
set protocols ovsdb controller <ha proxy vip> protocol ssl port <port>
(remove the passive option)

testbed.py:
env.ca_cert_file= '/var/lib/openvswitch/pki/switchca/cacert.pem'
under tor-agent set the protocol to pssl:
'tor_ovs_protocol':'pssl',

the ssl port is where the agent listens so it has to be uniq unless the agents are spawned on different tsns
	To generate certs:
	apt-get install openvswitch-common
	ovs-pki init
	ovs-pki req+sign vtep
	scp vtep-cert.pem root@<tor>:/var/db/certs
	scp vtep-privkey.pem root@<tor>:/var/db/certs

	QFX Config:
	set protocols ovsdb controller <ha proxy vip> protocol ssl port <port>
	(remove the passive option)

	testbed.py:
	env.ca_cert_file= '/var/lib/openvswitch/pki/switchca/cacert.pem'
	under tor-agent set the protocol to pssl:
	'tor_ovs_protocol':'pssl',

	the ssl port is where the agent listens so it has to be uniq unless the agents are spawned on different tsns