delete delimiter from init fernet condition check
delete delimiter from init fernet condition check

In ansible 2.3.1, conditional statement should not include jinja2
templating delimiters (e.g. {{ ).  So, this change removes the
delimiters from when statemant, and also removes unnesessary
parentheses from until statement.

Closes-Bug: 1702607

Change-Id: I071ffd5ba6175ee1bc61719a84b805c022753459

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible