Update yamllint config to fix the CI errors

Recently we started seeing CI failing on fi-ansible-lint-diff job, this update
to yamllint config should fix that. See
https://ansible.readthedocs.io/projects/lint/rules/yaml/#yamllint-configuration
for more information about the default yamllint config.

Signed-off-by: Michal Konecny <mkonecny@redhat.com>

.yamllint.yaml

@@ -2,6 +2,14 @@
 extends: default
 
 rules:
+  comments:
+    min-spaces-from-content: 1
+  comments-indentation: false
+  braces:
+    max-spaces-inside: 1
+  octal-values:
+    forbid-implicit-octal: true
+    forbid-explicit-octal: true
   indentation:
     spaces: 2
     indent-sequences: whatever