[Performance] Break CRR into its own test

[jtaleric]

Proposal / RFE

Separate CRR into its own test due to conntrack limits.

Default max for conntrack is :

cat /proc/sys/net/nf_conntrack_max 
131072

Running CRR for multiple samples / extended duration can result in test failures. To avoid the user hitting this problem, we should still allow the user to run CRR, but stand-alone with pre-defined samples and duration.

Is your feature request related to a problem?

Yes. Extended runs for CRR will result in test failures.