copr-builder: improve prepare_base_image handling

roles/copr/backend/files/provision/builderpb_nova.yml

@@ -41,8 +41,8 @@
     - nova_cloud_vars.yml
 
   vars:
-    # pass this options if you need to create new base image from snapshot
-    #prepare_base_image: True
+    # change this to True if you need to create new base image from snapshot
+    prepare_base_image: False
 
   tasks:
   - include: "provision_builder_tasks.yml"
@@ -59,4 +59,4 @@
       - glibc.i686
       - nosync
       - nosync.i686
-    when: prepare_base_image is defined
+    when: prepare_base_image

roles/copr/backend/files/provision/builderpb_nova_ppc64le.yml

@@ -41,8 +41,8 @@
     - nova_cloud_vars.yml
 
   vars:
-    # pass this options if you need to create new base image from snapshot
-    #prepare_base_image: True
+    # change this to True if you need to create new base image from snapshot
+    prepare_base_image: False
 
   tasks:
   - include: "provision_builder_tasks.yml"

roles/copr/backend/files/provision/provision_builder_tasks.yml

@@ -4,6 +4,7 @@
 - name: put infra stg repos into yum.repos.d if staging
   copy: src=files/dnf/infra-tags-stg.repo dest=/etc/yum.repos.d
   when: network_name == "coprdev-net"
+  when: not prepare_base_image
 
 - name: disable updates-testing
   file:
@@ -11,7 +12,7 @@
     state: absent
 
 - shell: dnf -y upgrade
-  when: prepare_base_image is defined
+  when: prepare_base_image
 
 - name: set bigger timeout for yum
   ini_file: dest=/etc/yum.conf section=main option=timeout value=1000