Move NetworkNotificationManagerTest to tests/net

Bug: 32561414
Test: no functional change
Change-Id: Iad17e3336a4a589da5cf88fd6359323e34b747e1
diff --git a/services/tests/servicestests/src/com/android/server/connectivity/NetworkNotificationManagerTest.java b/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
similarity index 100%
rename from services/tests/servicestests/src/com/android/server/connectivity/NetworkNotificationManagerTest.java
rename to tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java