(This is a merge of http://go/wvgerrit/102084.)
No one was claiming ownership of the metrics object in
CertificateProvisioningTest, resulting in a leak. This patch makes the
test hold onto ownership.
Bug: 159486086
Test: CE CDM Unit Tests
Test: Android Unit Tests
Change-Id: I84710782b7a60d6bd3a7eda981de4f0af877fc39