Change test .dex.art to .art

Fixes some file names that were too long and causing tests to fail.

Change-Id: Id4929b2ba98e7c0bc7daa33ec3e783738f5e4719
diff --git a/test/etc/run-test-jar b/test/etc/run-test-jar
index e6e154e..3efa6ff 100755
--- a/test/etc/run-test-jar
+++ b/test/etc/run-test-jar
@@ -367,7 +367,7 @@
                       --boot-image=${BOOT_IMAGE} \
                       --dex-file=$DEX_LOCATION/$TEST_NAME.jar \
                       --oat-file=$DEX_LOCATION/dalvik-cache/$ISA/$(echo $DEX_LOCATION/$TEST_NAME.jar/classes.dex | cut -d/ -f 2- | sed "s:/:@:g") \
-                      --app-image-file=$DEX_LOCATION/dalvik-cache/$ISA/$(echo $DEX_LOCATION/$TEST_NAME.jar/classes.dex.art | cut -d/ -f 2- | sed "s:/:@:g") \
+                      --app-image-file=$DEX_LOCATION/dalvik-cache/$ISA/$(echo $DEX_LOCATION/$TEST_NAME.jar/classes.art | cut -d/ -f 2- | sed "s:/:@:g") \
                       --instruction-set=$ISA"
   if [ "x$INSTRUCTION_SET_FEATURES" != "x" ] ; then
     dex2oat_cmdline="${dex2oat_cmdline} --instruction-set-features=${INSTRUCTION_SET_FEATURES}"