chore(yamllint): exclude cloud-init files from comment and document-start rules

.lefthook.yml

@@ -1,4 +1,5 @@
-assert_lefthook_installed: true
+---
+# assert_lefthook_installed: true
 no_tty: true
 
 lint:

.yamllint.yaml

@@ -5,6 +5,16 @@
 extends: default
 
 rules:
+  comments:
+    ignore:
+      - 'cloud-init/*'
+      - 'examples/cloud-init/*'
+      - 'examples/terraform/multi-part cloud-init/*'
+  document-start:
+    ignore:
+      - 'cloud-init/*'
+      - 'examples/cloud-init/*'
+      - 'examples/terraform/multi-part cloud-init/*'
   line-length:
     level: warning
     max: 120