Export the system modules for module APIs stub

Bug: 183097033
Test: m droid
Change-Id: I9145fc31842fe852bfee092f1b56ba1a5c53e624
diff --git a/build/sdk/Android.bp b/build/sdk/Android.bp
index 1817a31..f91e862 100644
--- a/build/sdk/Android.bp
+++ b/build/sdk/Android.bp
@@ -126,6 +126,7 @@
                 "legacy-art-module-platform-api-stubs-system-modules",
                 "stable-art-module-platform-api-stubs-system-modules",
                 "core-current-stubs-system-modules",
+                "core-module-lib-stubs-system-modules",
                 "legacy-core-platform-api-stubs-system-modules",
                 "stable-core-platform-api-stubs-system-modules",
             ],