Description of problem: I a not able to create alert condition of 'Drift' type. Issue is very similar to Bug 967488


Version-Release number of selected component (if applicable):
4.8-master

How reproducible: always


Steps to Reproduce:
do POST /alert/definitions?resourceId=xxx

with body

{"dampeningCategory": "NONE", "conditions": [{"category": "EVENT", "name": "INFO", "option": ".*"}], "conditionMode": "ALL", "enabled": true, "name": "rest-condition-event"}

Actual results:
Can not construct instance of org.rhq.core.domain.alert.AlertConditionOperator from String value 'INFO': value not one of declared Enum instance names\n at [Source: org.apache.catalina.connector.CoyoteInputStream@327cc96c; line: 1, column: 66] (through reference chain: org.rhq.enterprise.server.rest.domain.AlertDefinitionRest[\"conditions\"]->org.rhq.enterprise.server.rest.domain.AlertConditionRest[\"name\"])

Expected results:

alert definition is created. When creating a definition of type "EVENT", "name" should be interpreted as "event severity" enum and "option" is a regular expression to match message.