ART: Add system properties support

Add simple support for GetSystemProperties, GetSystemProperty and
SetSystemProperty. Add a test.

Bug: 31455788
Test: m test-art-host-run-test-922-properties
Change-Id: I02914f04643f0f8fab96f1b372925c2c5306fc9b
diff --git a/runtime/openjdkjvmti/Android.bp b/runtime/openjdkjvmti/Android.bp
index d486380..be06dd7 100644
--- a/runtime/openjdkjvmti/Android.bp
+++ b/runtime/openjdkjvmti/Android.bp
@@ -25,6 +25,7 @@
            "ti_heap.cc",
            "ti_method.cc",
            "ti_object.cc",
+           "ti_properties.cc",
            "ti_stack.cc",
            "ti_redefine.cc",
            "transform.cc"],