QA output created by 1053

=== json agent installation ===
Updating the Performance Metrics Name Space (PMNS) ...
Terminate PMDA if already installed ...
[...install files, make output...]
Updating the PMCD control file, and notifying PMCD ...
Check json metrics have appeared ... 2 metrics and Y values

=== remove json agent ===
Culling the Performance Metrics Name Space ...
json ... done
Updating the PMCD control file, and notifying PMCD ...
[...removing files...]
Check json metrics have gone away ... OK
