Update Jack options to enable invoke-polymorphic

Test: m -j32 test-art-host

(cherry picked from commit 39f502e67b9c6ac7e31e079ecbdf4252765a71bd)

Change-Id: I756006ed1b8f77b8f50508fe1db0a97a652ce208
diff --git a/test/etc/default-build b/test/etc/default-build
index e663496..f2b5078 100755
--- a/test/etc/default-build
+++ b/test/etc/default-build
@@ -71,7 +71,7 @@
 declare -A JACK_EXPERIMENTAL_ARGS
 JACK_EXPERIMENTAL_ARGS["default-methods"]="-D jack.java.source.version=1.8 -D jack.android.min-api-level=24"
 JACK_EXPERIMENTAL_ARGS["lambdas"]="-D jack.java.source.version=1.8 -D jack.android.min-api-level=24"
-JACK_EXPERIMENTAL_ARGS["method-handles"]="-D jack.java.source.version=1.8 -D jack.android.min-api-level=26"
+JACK_EXPERIMENTAL_ARGS["method-handles"]="-D jack.java.source.version=1.7 -D jack.android.min-api-level=o-b1"
 
 declare -A SMALI_EXPERIMENTAL_ARGS
 SMALI_EXPERIMENTAL_ARGS["default-methods"]="--api-level 24"