Note that in order to test and verify this you will need to force an error in the configuration. To do so manually perform the following update in the database:
update vdc_options set option_value='secure=bool,port=int,slot=int' where option_name='VdsFenceOptionTypes'
Then restart the engine, and once it is running again request the API capabilities resource:
GET /ovirt-engine/api/capabilities
That used to fail but should succeed now, and the following error message should appear in engine.log:
ERROR: No type specified for fencing option "encrypt_options".
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2016-0661.html