Revert "Blacklist flaky test."

Reverts the blacklisting of NetworkSecurityPolicyTest
#testCleartextTrafficPolicyWithJarHttpURLConnection.

This reverts commit 71ceb721240d50d396ea1a61a2bf2832be345007.

Bug: 31944681
Change-Id: Ib0f13cfec021e258ceba480c43cced59c554b3f5
1 file changed