Move cronet to framework-connectivity

aosp/2384137 added cronet to framework-tethering.
But framework-connectivity is a better place to put cronet since
cronet does not work on R devices (b/270049141) and
framework-tethering is R+, framework-connectivity is S+.

Followup CLs will move some modules (e.g. CronetJavaPrejarjarDefaults)
that use the branch dependent soong variables to framework/Android.bp

Test: TH
Bug: 278070640
Change-Id: I6bc10116759fb9e083c02147908e53022dab740a
diff --git a/framework/jarjar-excludes.txt b/framework/jarjar-excludes.txt
index 1311765..9b48d57 100644
--- a/framework/jarjar-excludes.txt
+++ b/framework/jarjar-excludes.txt
@@ -23,3 +23,8 @@
 
 # TODO (b/217115866): add jarjar rules for Nearby
 android\.nearby\..+
+
+# Don't touch anything that's already under android.net.http (cronet)
+# This is required since android.net.http contains api classes and hidden classes.
+# TODO: Remove this after hidden classes are moved to different package
+android\.net\.http\..+
\ No newline at end of file