Host deploy is failing on master with errors. The issue seems to be that the opcode that is returned from vdsm has Unicode null characters in it (obtained using a break point in VdsDeploy.userVisibleLog).
"Failed to execute stage 'Initializing': Invalid response opcode '\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000CONFIRM'"
Resulting in below errors when the message is inserted into database.
2018-09-11 13:38:11,121-04 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (VdsDeploy) [669a0081] EVENT_ID: VDS_INSTALL_IN_PROGRESS(509), Installing Host 192.168.122.57. Stage: Initializing.
2018-09-11 13:38:39,231-04 INFO [org.ovirt.engine.core.utils.transaction.TransactionSupport] (VdsDeploy) [669a0081] transaction rolled back
2018-09-11 13:38:39,231-04 ERROR [org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [669a0081] Error during deploy dialog
2018-09-11 13:38:39,246-04 ERROR [org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (EE-ManagedThreadFactory-engine-Thread-11) [669a0081] Error during host 192.168.122.57 install
2018-09-11 13:38:41,791-04 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engine-Thread-11) [669a0081] EVENT_ID: VDS_INSTALL_IN_PROGRESS_ERROR(511), An error has occurred during installation of Host
192.168.122.57: CallableStatementCallback; SQL [{call insertauditlog(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)}ERROR: invalid byte sequence for encoding "UTF8": 0x00; nested exception is org.postgresql.util.PSQLException: ERROR: invalid byte sequence for encoding "UTF8": 0x00.