lttng.control: Add a text field for enabling specific logger by name

lttng.control: Add a text field for enabling specific logger by name

Add a text field in the "Enable Events" dialog under the JUL and LOG4J
domain to be able to enable logger(s) by entering names in a comma
separated list format.

Change-Id: Ife28b08b14d4ffb30a7fc5adaed370da8063bc5f
Signed-off-by: Bruno Roy <bruno.roy@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/78349
Reviewed-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>