While running the hardening role, I found that a small VM would
regularly crash ansible on the chrony configuration templating
task with "A worker was found in a dead state!". An ansible bug[0]
shows that this can be caused by jinja templating that is not casted
to the correct type.
After verifying the crash was reproducible 3-4 times in a row, this
crash stopped occuring once I started casting this variable to a bool.
I don't know if it is coincidence but it can't hurt to cast this
conditional regardless.
[0] https://github.com/ansible/ansible/issues/32554#issuecomment-382360908
Change-Id: Ie34de1808c807fd31099cc7d3d7b140ccfab64df
00ad3500c8