Add test telephony apex config for e2e tests

Add a test telephony apex config in order to run the e2e tests for apex
install/uninstall.

Bug: 145232009
Test: atest telephony_e2e_tests
Change-Id: I8d566377b9e70fc4ec867276b2f640cde4f728bf
diff --git a/apex/testing/test_manifest.json b/apex/testing/test_manifest.json
new file mode 100644
index 0000000..30bfda2
--- /dev/null
+++ b/apex/testing/test_manifest.json
@@ -0,0 +1,4 @@
+{
+  "name": "com.android.telephony",
+  "version": 2147483647
+}
\ No newline at end of file