Add some manubulon snmp plugins

refs #6650
Added license header, remove commas after expressions and change comments format

refs #6650
Added plugin-commands-manubulon.conf into CMakeLists.txt

refs #6650
Addes itl/manubulon file

refs #6650
Updated Manubulon documentation

refs #6650
Rename plugin-commands-manubulon.conf to command-plugins-manubulon.conf

refs #6650
Fix the documentation for manubulon check plugin commands

refs #6650
Install missing itl/manubulon

refs #6650
Merge branch 'feature/snmp-plugins-6650'

fixes #6650
Update what's new

refs #6704