Cause: oo-accept-broker doesn't filter the single or double quote from MONGO_HOST_PORT variable before parsing it.
Consequence: The individual host and port parsed from MONGO_HOST_PORT contain unwanted quote characters. When oo-accept-broker attempts to access to broker using those information, it fails. As a result, it generates a false result that oo-accept-broker fails.
Fix: The unwanted quote characters from MONGO_HOST_PORT will be removed before parsing.
Result: The oo-accept-broker command now has correct information about broker's host and port to determine if the broker is accessible.