[1.7>master] [MERGE #3564 @dilijev] Fix space between , and exclude_xplat (rl doesn't handle spaces)

Merge pull request #3564 from dilijev:fix_test_tag

Author: dilijev

test/es6/rlexe.xml

@@ -1309,7 +1309,7 @@
   <default>
     <files>await-futreserved-only-in-modules.js</files>
     <compile-flags>-MuteHostErrorMsg -ES6Module</compile-flags>
-    <tags>exclude_dynapogo, exclude_xplat</tags>
+    <tags>exclude_dynapogo,exclude_xplat</tags>
   </default>
 </test>
 <test>