core: engine.log is flooded by Failed to decrypt..

engine.log is flooded by Failed to decrypt Data Errors

Since this occured rarely on upgrades, we had decided to give a utility
that will fix that and be used by GSS.

Usage: encryptionvalidator.sh [-h] [-s SERVERNAME [-p PORT]] [-d
DATABASE] [-u USERNAME] [-l LOGFILE] [-c CERTIFICATE] [-f] [-v]

-s SERVERNAME - The database servername for the database
(def.localhost)
-p PORT       - The database port for the database        (def.5432)
-d DATABASE   - The database name                         (def.engine)
-u USERNAME   - The admin username for the database.
-l LOGFILE    - The logfile for capturing output
(def.encryptionvalidator.sh.log)
-c CERTIFICATE- The certificate file to use for the encryption.(def
/etc/pki/ovirt-engine/certs/engine.cer)
-f            - Fix the non encrypted data in DB.
-v            - Turn on verbosity (WARNING: lots of output)
-h            - This help text.

Change-Id: I0fb6694ad78b3e92e001c20dc5815c0d45cf15ca
Signed-off-by: Eli Mesika <emesika@redhat.com>