Add support for Bifrost dib_os_release

There is a Bifrost bug that causes this variable to be required

ansible/group_vars/all/bifrost

@@ -7,6 +7,9 @@
 # DIB base OS element.
 kolla_bifrost_dib_os_element: "centos7"
 
+# DIB image OS release.
+kolla_bifrost_dib_os_release: "GenericCloud"
+
 # List of DIB elements.
 kolla_bifrost_dib_elements:
   - "serial-console"

ansible/roles/kolla-bifrost/defaults/main.yml

@@ -5,6 +5,9 @@ kolla_node_custom_config_path:
 # DIB image OS element.
 kolla_bifrost_dib_os_element:
 
+# DIB image OS release.
+kolla_bifrost_dib_os_release:
+
 # List of DIB image elements.
 kolla_bifrost_dib_elements: []
 

ansible/roles/kolla-bifrost/templates/dib.yml.j2

@@ -2,11 +2,14 @@
 # Diskimage-builder element for base OS.
 dib_os_element: "{{ kolla_bifrost_dib_os_element }}"
 
+# DIB OS release.
+dib_os_release: "{{ kolla_bifrost_dib_os_release }}"
+
 # List of DIB image elements.
 dib_elements: "{{ (kolla_bifrost_dib_elements + [kolla_bifrost_dib_init_element]) | join(' ') }}"
 
 # DIB image environment variables.
-dib_env_vars: "{{ kolla_bifrost_dib_env_vars }}"
+{{ {'dib_env_vars': kolla_bifrost_dib_env_vars} | to_nice_yaml }}
 
 # List of DIB image packages.
 dib_packages: "{{ kolla_bifrost_dib_packages | join(',') }}"

etc/kayobe/bifrost.yml

@@ -7,6 +7,9 @@
 # DIB base OS element.
 #kolla_bifrost_dib_os_element:
 
+# DIB image OS release.
+#kolla_bifrost_dib_os_release:
+
 # List of DIB elements.
 #kolla_bifrost_dib_elements: