Metacat

Made the ssl http client not moinitor the stale connections.

Use the new AutoCloseInputStream wrapper for replication. It will close but http client and input stream when the inputStream.close method is called.

If a format id in the system metadata is registered in the xml_catalog table, we will use the schema location for the format id to validate the xml instance;
otherwise, we will use our previous way.

Add the code to check if the metacat is in the read-only mode.

Don't use ssClient as a class field. Now it is a local variable. This fixed an issue that two statements using the client caused the exception - java.net.SocketTimeoutException: Read timed out.

refs: #7092. found another unclosed inputStream, this time in ReplicationService.handleForceReplicationDataFileRequest(...).

fixes #7092: added finally clause to ReplicationHandler.update method to unconditionally close the inputStreams it keeps in a Vector. Needs testing.

ReplicationServices.getUrlStream(url) callers were not closing the inputstream properly, as was revealed when switching to libclient v2 (a pooling connection manager in HttpClient) and encountering reasource leaks.

bullet-proofed exception handling in ReplicationService.getURLStream, to make sure client communication exceptions are handled and logged.

fixed getSSLClient method.