HPCC-9129 DOCS:Ganlia

Fix HPCC-9129 DOCS:Ganlia
Provide documentation about Ganglia
and HPCC Reporting.
Renamed xml file.

Signed-off-by: g-pan <greg.panagiotatos@lexisnexis.com>
Merge pull request #5727 from g-pan/H9129-Gang1ia

HPCC-9129 DOCS:Ganglia