MediaSession2: Fix timing issue

Session/Controller needs mProvider. However, if the createProvider()
interacts with other components, than other components may use session
/controller object before mProvider is set.

This CL prevents such issues by calling initialize() to communicate
with other components after the provider is set.

Test: Run all MediaComponents test once
Change-Id: Ic6eb1a7f96a2084b3a011da30a5053aff5620977
diff --git a/packages/MediaComponents/test/runtest.sh b/packages/MediaComponents/test/runtest.sh
index 5c0ef51..d0290e7 100644
--- a/packages/MediaComponents/test/runtest.sh
+++ b/packages/MediaComponents/test/runtest.sh
@@ -129,6 +129,7 @@
       ${adb} root
       ${adb} remount
       ${adb} shell stop
+      ${adb} shell setprop log.tag.MediaSessionService DEBUG
       ${adb} sync
       ${adb} shell start
       ${adb} wait-for-device || break