Let tests informa Jack of the min api version

This is necessarry for compiling source code with default method.

Bug: 27371864

Change-Id: I8c9d3690e403729facd2e868cbda761b3488b2f6
diff --git a/test/etc/default-build b/test/etc/default-build
index d048757..3d84821 100755
--- a/test/etc/default-build
+++ b/test/etc/default-build
@@ -66,8 +66,8 @@
 
 # Setup experimental flag mappings in a bash associative array.
 declare -A JACK_EXPERIMENTAL_ARGS
-JACK_EXPERIMENTAL_ARGS["default-methods"]="-D jack.java.source.version=1.8"
-JACK_EXPERIMENTAL_ARGS["lambdas"]="-D jack.java.source.version=1.8"
+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"
 
 while true; do
   if [ "x$1" = "x--dx-option" ]; then