[Misc] Update dragonwell version to 8.1.1

Summary:
Update dragonwell version to 8.1.1

Test Plan:
make.sh saint check

Reviewed-by: luchsh,sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/55

dragonwell_version

@@ -19,6 +19,6 @@
 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 #
 
-DRAGONWELL_VERSION=8.0.0
+DRAGONWELL_VERSION=8.1.1
 DRAGONWELL_JDK_UPDATE_VERSION=222
 DRAGONWELL_JDK_BUILD_NUMBER=b10