Add entry for libpfm related tests to Makefile

[Creatone]

It must be possible to run libpfm related tests with Makefile.

[k8s-ci-robot]

Hi @Creatone. Thanks for your PR.

I'm waiting for a google member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[dashpole]

/ok-to-test

[dashpole]

lgtm

[dashpole]

/retest

[dashpole]

I0724 16:17:04.048] >> running tests
W0724 16:17:04.151] go test: race flag may be set only once
W0724 16:17:04.153] run "go help test" or "go help testflag" for more information

[Creatone]

Okk @dashpole, I found better solution for this case.