HPCC-10274 Add workunit xml file to Bug Report zip file

It would be helpful to include the workuntil xml as a file in the
zip file created when the user chooses the create bug report ECLWatch
option

Signed-off-by: William Whitehead <william.whitehead@lexisnexis.com>
Merge branch 'bugRpt' into candidate-4.2.0

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>