Simplify ansible-lint config and fix Docker builds: Ubuntu DEBIAN_FRONTEND, CentOS --allowerasing

.ansible-lint

@@ -21,24 +21,6 @@ skip_list:
   - galaxy     # We don't publish to Galaxy
   - meta-no-info  # No meta/main.yml files
 
-# Configure specific rules
-rules:
-  line-length:
-    max: 120
-  truthy:
-    allowed-values: ['true', 'false', 'yes', 'no', 'on', 'off']
-  braces:
-    max-spaces-inside: 1
-    max-spaces-inside-empty: 0
-  brackets:
-    max-spaces-inside: 1
-    max-spaces-inside-empty: 0
-  indentation:
-    spaces: 2
-    indent-sequences: true
-  comments:
-    min-spaces-from-content: 1
-
 # Offline mode (don't check for newer ansible-lint versions)
 offline: false