daemonset: wait for ovs to be ready before starting ovnkube-master
daemonset: wait for ovs to be ready before starting ovnkube-master

ovnkube-master container sets few fields in OVS DB and this fails if
ovs-servers is not ready by that time. This patch fixes that issue.
Otherwise, we will see panics like this below in ovnkube-master.log.

{"log":"panic: Error setting OVS external ID
  'ovn-nb=\"tcp:10.10.0.11:6641\"': exit status 1\n","stream":"stderr",
   "time":"2019-04-05T17:14:08.569185599Z"}

Signed-off-by: Girish Moodalbail <74ea68506563fcb14ffc94b33dcc0cf7da66ea4d@nvidia.com>

shettyg/ovn-kubernetes,shettyg/ovn-kubernetes,shettyg/ovn-kubernetes