remount: Remount read/write by default

Setting the `remount_state` variable to `rw` by default will allow the
`remount.yml` playbook to be "chained" with other playbooks, e.g.:

```
ansible-playbook -l kubelet remount.yml collectd.yml -b
```

remount.yml

@@ -6,7 +6,7 @@
 - hosts: all
   gather_facts: true
   vars:
-    remount_state: ro
+    remount_state: rw
     remount_fs:
     - /
     - /usr
@@ -23,3 +23,5 @@
          | list
       }}
     when: not item.options.startswith(remount_state)
+    tags:
+    - always