Add ansible-lint configuration file

Skip the following rules:

- 106, "Role name does not match ^[a-z][a-z0-9_]+$ pattern"
  (ansible-lint complains about role names containing underscores, to
  be fixed in a later patch)
- 701, "meta/main.yml should contain relevant info" (ansible-lint
  complains about missing galaxy_info)

.ansible-lint

+skip_list:
+  - 106
+  - 701