Add python[3]-jobs and check-requirements to freezer*
Add python[3]-jobs and check-requirements to freezer*

Cleaning up and adding python[3]-jobs and
check-requirements templates
for freezer, freezer-api, freezer-web-ui

Depends-On: I9742e5261cd666f09a0bd93e2372da6a10f5f69b
Depends-On: I06391e714c94b2308b2ce20ba503cb5773bf829e
Depends-On: I3c2d63262a87a7d84bd95640de0140332e3e34ae

Change-Id: Iae75d00f6b3d18c55b32fd11b91836a1ce4ddd95

openstack-infra/project-config,Tesora/tesora-project-config,Tesora/tesora-project-config,noorul/os-project-config,openstack-infra/project-config,dongwenjuan/project-config,noorul/os-project-config,dongwenjuan/project-config