Bump version to 1.2.10
Bump version to 1.2.10

(previous 1.2.9 was used temporarily to test and improve IR tagging process)

Change-Id: I2952d077ec06aa4b51c63f36c8059861aaa600e2

redhat-openstack/infrared,okolisny/InfraRed,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared