Make seed Pulp container optional

Author: markgoddard

etc/kayobe/seed.yml

@@ -86,18 +86,13 @@
 ###############################################################################
 # Seed node additional containers configuration
 
-# Dict of container images to start
-# Example:
-# seed_containers:
-#   squid:
-#     name: "squid"
-#     image: "stackhpc/squid:3.5.20-1"
-#     pre: "{{ kayobe_env_config_path }}/containers/squid/pre.yml"
-#     post: "{{ kayobe_env_config_path }}/containers/squid/post.yml"
-#
-seed_containers:
+# Seed container running a "Pulp in one" service.
+# https://pulpproject.org/pulp-in-one-container/
+# This can be used as a package mirror, and container image registry.
+seed_pulp_container_enabled: true
+
+seed_pulp_container:
   pulp:
-    name: pulp
     image: pulp/pulp
     pre: "{{ kayobe_config_path }}/containers/pulp/pre.yml"
     post: "{{ kayobe_config_path }}/containers/pulp/post.yml"
@@ -110,6 +105,18 @@ seed_containers:
       - pulp_containers:/var/lib/containers
     restart_policy: unless-stopped
 
+# Dict of container images to start
+# Example:
+# seed_containers:
+#   squid:
+#     name: "squid"
+#     image: "stackhpc/squid:3.5.20-1"
+#     pre: "{{ kayobe_env_config_path }}/containers/squid/pre.yml"
+#     post: "{{ kayobe_env_config_path }}/containers/squid/post.yml"
+#
+seed_containers: >-
+  {{ {} | combine(seed_pulp_container if seed_pulp_container_enabled | bool else {}) }}
+
 ###############################################################################
 # Seed node firewalld configuration.