Fixing encfs shell invocation for ansible 2 compatibility

requirements.txt

@@ -1 +1 @@
-ansible>=1.9.3,<2
+ansible>=2.2

roles/common/tasks/encfs.yml

@@ -21,7 +21,7 @@
   when: encfs_check.rc > 0
 
 - name: If /encrypted isn't empty, mount it (but only if /decrypted/test doesn't exist)
-  shell: printf "{{ encfs_password }}" | encfs /encrypted /decrypted --public --stdinpass creates="/decrypted/test"
+  shell: command="printf '{{ encfs_password }}' | encfs /encrypted /decrypted --public --stdinpass" creates="/decrypted/test"
   when: encfs_check.rc == 0
 
 - name: Set decrypted directory permissions