Use the run script from external/robolectric-shadows

This enables testing against changes found in the SDK under development.

Bug: 72384841
Test: make Run_TeleService_robotests
Change-Id: I7a606cd6a3b0643afb0a97569aef2059e613dde4
diff --git a/tests/robotests/res/robolectric.properties b/tests/robotests/res/robolectric.properties
new file mode 100644
index 0000000..d83f967
--- /dev/null
+++ b/tests/robotests/res/robolectric.properties
@@ -0,0 +1,3 @@
+manifest=/packages/services/Telephony/AndroidManifest.xml
+sdk=NEWEST_SDK
+shadows=com.android.phone.ShadowPhoneGlobals
\ No newline at end of file