Build: Add agent library to default packages

Add libopenjdkjvmti to ART dependencies.

Bug: 31455788
Test: m && ls $OUT/system/lib/libopenjdkjvmti.so
Change-Id: Iccf35f04548d74df87ec05f2cb555c1db9d137c6
diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index 5fd4d7e..a420fbd 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -43,6 +43,7 @@
     libjavacore \
     libopenjdk \
     libopenjdkjvm \
+    libopenjdkjvmti \
     libnativehelper \
     libssl \
     libz \