Changes

releng: Build with tracecompass-e4.26 target by default

Change default JDK version to 17 in pom.xml.

Change-Id: I7f19ad1d8af8bd19a3da24abb9dfdf3e2543dcfb
Signed-off-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/196524
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>

releng: Make Trace Compass RCP use Java 17 by default

- Update default tracing.product for Java 17
- Save current tracing.product file in directory legacy-e4.23-e4.25 for
legacy builds later/equal than e4.23 but before e4.26
- Remove staging/tracing.product
- Remove Solaris entry in product files

Change-Id: Ib57698df51e27688201d14a5e0cec1457548549d
Signed-off-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/197339
Tested-by: Patrick Tasse <patrick.tasse@gmail.com>
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>