Add missed stuff for offline

* Enable caching for DebMirror to save disk space
  Use caching logic to save disk space for DebMirror, so same packages
  in different repo versions will be used via hardlinks;
* Save in offline default Cirros/Fedora images.
* Add ci-tempest with pinned pike/queens tags to offline registry

Change-Id: I832d45167ad4b70b8349260614ffc8bbb9a911ca
Related-Prod: PROD-32735
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index 0e940a0..1c742db 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -241,6 +241,12 @@
     #
     amphora_image_name: amphora-x64-haproxy
     amphora_image_url: ${_param:mcp_static_images_url}/octavia/amphora-x64-haproxy-${_param:openstack_version}-${_param:mcp_version}.qcow2
+
+    glance_image_cirros_name: 'TestCirros-0.3.5'
+    glance_image_cirros_location: "${_param:mcp_binary_registry}/mirantis/external/images/cirros/0.3.5/cirros-0.3.5-x86_64-disk.img"
+
+    glance_image_fedora_name: 'TestFedora-27-1.6'
+    glance_image_fedora_location: "${_param:mcp_binary_registry}/mirantis/external/images/cloud-fedora/27/Fedora-Cloud-Base-27-1.6.x86_64.qcow2"
     # Sahara
     mysql_sahara_username: sahara
     keystone_sahara_username: sahara