Write Load test for Alfresco Webscript Connector

Based on the specs, defined in https://issues.apache.org/jira/browse/CONNECTORS-1060 , write a Load test suite that:

• Runs Alfresco in integration-test, as the existing IT test
• Spawns 2 parallel threads, one that runs Manifold jobs, the other pushing documents into Alfresco via CMIS
• Creates between 100.000 and 400.000 documents in Alfresco (should not exceed 4 hours run; it must also be explicitly invoked and kept out of automated runs)
• Outputs the throughput of insertion and crawling