copr: drop 'stage' variable

Since the 'env' by design (see comments in inventory/group_vars/all) can
only contain 'production' or 'staging', we still need to have a way to
to detect 'staging' vs 'development'.

There already was 'devel' variable in copr, but it was set to 'true'
also on staging.  So let's change this.

inventory/group_vars/copr_stg

@@ -1,6 +1,5 @@
 ---
-devel: true
+devel: false
-stage: true
 #_forward-src: "{{ files }}/copr/forward-dev"
 _forward_src: "forward_dev"
 

roles/copr/backend/templates/resalloc/pools.yaml

@@ -1,4 +1,4 @@
-{% if not devel %}
+{% if env == "production" %}
 # Production configuration.  On each aarch64 host we have
 # 2 guests VMs of
 # - 10 VCPUs
@@ -22,7 +22,7 @@ aarch64_02_prod:
     cmd_delete: "/var/lib/resallocserver/resalloc_provision/vm-aarch64-delete"
     tags:
     - aarch64
-{% elif stage is not defined %}
+{% elif devel %}
 # Development configuration.  On each aarch64 host we have
 # 2 guests vms of
 # -  2 VCPUs   (default)
@@ -46,4 +46,6 @@ aarch64_02_dev:
     cmd_delete: "/var/lib/resallocserver/resalloc_provision/vm-aarch64-delete"
     tags:
     - aarch64
+{% else %}
+# No aarch64 hosts on staging for now.
 {% endif %}

roles/copr/frontend-cloud/templates/copr.conf

@@ -1,6 +1,6 @@
 # Purpose of this instance
 # Use "production", "devel", "local" or "test"
-ENV={% if devel %}"devel"{% else %}"production"{% endif %}
+ENV={% if devel %}"devel"{% else %}{{ env }}{% endif %}
 
 # Directory and files where is stored Copr database files
 DATA_DIR = '/var/lib/copr/data'