Automatic merge from submit-queue (batch tested with PRs 50091, 50231, 50238, 50236, 50243)

Move the sig-instrumentation test to a dedicated folder

Move the last remaining test to sig-instrumentation folder, also move "metrics" package to the "framework" folder

Related issue: https://github.com/kubernetes/kubernetes/issues/49161

/cc @xiangpengzhao @piosz