QA output created by 843

Updating the Performance Metrics Name Space (PMNS) ...
Terminate PMDA if already installed ...
Updating the PMCD control file, and notifying PMCD ...
Check memory_python metrics have appeared ... 1 metrics and 1 values

memory_python.memory_valid
    value 1

memory_python.memory_valid
    value 1

memory_python.memory_valid
    value 1

memory_python.memory_valid
    value 1

memory_python.memory_valid
    value 1
