Add umask option for mount module

Author: satken2

tests/integration/targets/mount/tasks/main.yml

@@ -358,7 +358,6 @@
       path: /tmp/mount_dest
       state: mounted
       fstype: nullfs
-      opts: bind
       umask: 0777
     when: ansible_system == 'FreeBSD'
   - name: Unmount FS to access underlying directory
@@ -391,7 +390,6 @@
       path: /tmp/mount_dest
       state: mounted
       fstype: nullfs
-      opts: bind
       umask: "0777"
     when: ansible_system == 'FreeBSD'
   - name: Unmount FS to access underlying directory