Improving yamllint configuration (#11389)

Signed-off-by: Bas Meijer <bas.meijer@enexis.nl>

.yamllint

@@ -6,7 +6,7 @@ ignore: |
   .github/
   # Generated file
   tests/files/custom_cni/cilium.yaml
-
+# https://ansible.readthedocs.io/projects/lint/rules/yaml/
 rules:
   braces:
     min-spaces-inside: 0
@@ -14,9 +14,16 @@ rules:
   brackets:
     min-spaces-inside: 0
     max-spaces-inside: 1
+  comments:
+    min-spaces-from-content: 1
+  # https://github.com/adrienverge/yamllint/issues/384
+  comments-indentation: false
   indentation:
     spaces: 2
     indent-sequences: consistent
   line-length: disable
   new-line-at-end-of-file: disable
+  octal-values:
+    forbid-implicit-octal: true # yamllint defaults to false
+    forbid-explicit-octal: true # yamllint defaults to false
   truthy: disable