Allow modules to disable stripping when dexpreopting

Add a no_stripping property and pass it to dexpreopt to disable
stripping for a module.

Bug: 122610462
Test: dexpreopt_test.go
Change-Id: I5a4b005633bb8b1ea373e9eeb420aa0999de17ab
diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index 13a14f4..6b5c40d 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -113,6 +113,7 @@
 
 	PresignedPrebuilt bool
 
+	NoStripping     bool
 	StripInputPath  string
 	StripOutputPath string
 }