mcsapi - port specification through Columnstore.xml

Currently mcsapi uses the ColumnStore default ports to connect to.
This patch should allow mcsapi to use non-default ports as specified in Columnstore.xml

It should further add an optional Columnstore.xml entry to skip the Columnstore version check against the ProcMon port. This is useful as we need to expose as less ports as possible for SkySQL.
As SkySQL will use stable ColumnStore versions only, the version check could be skipped and the ProcMon port not exposed to our customers.