copr-be: move the aws_arch_subnets config to proper place

The provision playbook is run on backend, not on batcave - so it was
actually not accessible after b4b963d037.

inventory/group_vars/copr_all_instances_aws

@@ -1,17 +1 @@
-# Your requested instance type (a1.xlarge) is not supported in your requested Availability Zone (us-east-1a).
-# Your requested instance type (a1.xlarge) is not supported in your requested Availability Zone (us-east-1d).
-# Your requested instance type (a1.xlarge) is not supported in your requested Availability Zone (us-east-1f).
-
-aws_arch_subnets:
-  x86_64:
-    - subnet-0995f6a466849f4c3
-    - subnet-08cadf5a14b530ac4
-    - subnet-07b0b3168a353e3ee
-    - subnet-09c74a3e6420a206b
-    - subnet-01d4e967ab5e78005
-    - subnet-05437ac82d63b6ef5
-
-  aarch64:
-    - subnet-0995f6a466849f4c3
-    - subnet-08cadf5a14b530ac4
-    - subnet-07b0b3168a353e3ee
+# Put here configuration for all copr instances (production, devel, ...)

roles/copr/backend/templates/provision/aws_cloud_vars.yml

@@ -8,3 +8,20 @@ builder_images:
   aarch64: "{{ copr_builder_images.aws.aarch64 }}"
 
 mock_var_cache_tmpfs: true
+
+aws_arch_subnets:
+  x86_64:
+    - subnet-0995f6a466849f4c3
+    - subnet-08cadf5a14b530ac4
+    - subnet-07b0b3168a353e3ee
+    - subnet-09c74a3e6420a206b
+    - subnet-01d4e967ab5e78005
+    - subnet-05437ac82d63b6ef5
+
+  # Your requested instance type (a1.xlarge) is not supported in your requested Availability Zone (us-east-1a).
+  # Your requested instance type (a1.xlarge) is not supported in your requested Availability Zone (us-east-1d).
+  # Your requested instance type (a1.xlarge) is not supported in your requested Availability Zone (us-east-1f).
+  aarch64:
+    - subnet-0995f6a466849f4c3
+    - subnet-08cadf5a14b530ac4
+    - subnet-07b0b3168a353e3ee