More pylint changes
check if RT_GROUP_SCHED is enabled in kernel
Move CPU limit into net, to be reused in future unit tests
Remove blank line.
Reinstate more complicated test.
Pass code check.
Fix typo inadvertently saved in editor.
Add verySimpleLimit() for debugging.
Save parameters for future reference (e.g. OVS/tc workaround.)
Fix codecheck and MininetWithControlNet.
Support for CFS bandwidth limiting.Also trying to fix NOX cmdline opt, but broken at the moment.
Example/test of link and CPU bandwidth limits.