Fix context used in BlockedNumberProvider.

Minor fixes to tests as well.

BUG: 26232372
Change-Id: I939d050f1f80f2aa2ede4f990c6a116a55baa119
diff --git a/tests/Android.mk b/tests/Android.mk
index d85d7bb..8f500de 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -13,7 +13,7 @@
 # Only compile source java files in this apk.
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
-LOCAL_PACKAGE_NAME := BlockedNumberProviderTests
+LOCAL_PACKAGE_NAME := BlockedNumberProviderTest
 
 LOCAL_INSTRUMENTATION_FOR := BlockedNumberProvider
 LOCAL_CERTIFICATE := shared