Changes

doc: Update README.md to reflect latest deployment procedure.

Change-Id: If56b4c7adfedd9c9665dee6e6d716bf29f9b95dd
Signed-off-by: Bernd Hufmann <Bernd.Hufmann@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/tracecompass-test-traces/+/190528
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>