Add Database Fails with an FS-11373 Error 

BUG 23751379

When adding a database to a cluster, a FS-11373 error was returned when Oracle Fail Safe attempted to create the listener.  For example:
FS-11373: Failed to create listener FslTestGroup
When examining the FslTestGroup_create.log, the following error was displayed:
TNS-01106: Listener using listener name Listener has already been started

This error occurred when another listener was listening on all IP sockets available to the host node. The default listener is typically the listener who has opened a socket for all IP addresses.

This problem is resolved.  Before creating a listener, Oracle Fail Safe will stop the default listener to ensure that it is not using any IP addresses which may be needed by the new cluster group listener.