Add support for addition MA metadata parameters

[arlake228]

This issue captures the nagios aspect of perfsonar/project#1076,

Add support for the following metadata filters:

• v4 or v6 only
• measurement-agent
• tool-name
• tcp vs udp (BWCTL only)
• udp speeds (BWCTL udp only)
• any other custom filter if possible

[arlake228]

Fixed