Fixed Android Resolver log spam on load.

The Android Resolver was loading the AAR cache in a static constructor
and using the log functions before they were initialized with the
log level from project settings.  It was possible to configure system
wide logging as "verbose" - which would be used in static constructors -
before the project settings are loaded.

Fixes googlesamples#192

Bug: 132071158
Change-Id: Icdd5d5d12dfbf4d656885360bfceca15da2f7008

Author: Stewart Miles

source/PlayServicesResolver/src/ResolverVer1_1.cs

@@ -226,7 +226,7 @@ public override string ToString() {
         private static object resolveLock = new object();
 
         public ResolverVer1_1() {
-            LoadAarExplodeCache();
+            RunOnMainThread.Run(LoadAarExplodeCache, false);
         }
 
         /// <summary>