bump openstack-common dependency to 0.3.x

Change-Id: Id3025760fa14a1494db4040e71a0b4b1ceaebcf9
Update the version of openstack-common

Right now we are tracking 0.3.0 for openstack-common. Bump this
dependency accordingly.

Change-Id: Id70738089a8c929ece9d72aa7f5620619bd53aeb
Merge "bump openstack-common dependency to 0.3.x"
Merge "Update the version of openstack-common"