- refine the xcatperftest tool to make it be easily integrated into xcattest
- add testcase/performance/.. to trigger the performance testcase
- fix manpage missing issue for xcatperftest
* Feature #2681, to add a script in xCAT-test to get the performance baseline for node range operation.
* adopt review comments in PR#2916:
1, add the rst file for xcatperftest (#2681)
2, using /bin/bash as script executor
3, FILES in manpage should not be in the same line
4, minor adjustment if PERF_NOCREATE/PERF_DRYRUN is set
from the builds. Also remove the changelog because that file is going
to be ignored from the source tree. Ubuntu builds are being done
in the xcat-core directory and causing issues when we are switching
between releases. Should probably change the builds scripts as a longer
term solution