Support more variables for "debuggable".

Enhance bp feature to support
"product_variables.debuggable.exclude_static_libs" and
"product_variables.debuggable.jni_libs".

Bug: 325857852
Test: lunch akita-trunk_staging-userdebug && m ConnectivityMonitor
Change-Id: Iae843af2d41ec7754812a0b89a7ebc791c58e099
diff --git a/android/variable.go b/android/variable.go
index d144f7d..3b02bc7 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -132,9 +132,11 @@
 				Keep_symbols                 *bool
 				Keep_symbols_and_debug_frame *bool
 			}
-			Static_libs       []string
-			Whole_static_libs []string
-			Shared_libs       []string
+			Static_libs         []string
+			Exclude_static_libs []string
+			Whole_static_libs   []string
+			Shared_libs         []string
+			Jni_libs            []string
 
 			Cmdline []string