DO NOT MERGE: Migrate NetworkPolicyManagerServiceTest to JUnit 4.

BUG: 30839080
Test: runtest --path
frameworks/base/services/tests/servicestests/src/com/android/server/NetworkPolicyManagerServiceTest.java

(cherry picked from Ic192334389eed7596e1f7cb8ce98a5169262418c)

Change-Id: I90cf55ad948bbe0883473431f40201cf4206dc82
1 file changed