Extend the policheck exclusion list to include dist (#2202)

* Extend the policheck exclusion list to include dist

* Only add DIST

Author: JasonYeMSFT

.azure-pipelines/compliance/PoliCheckExclusions.xml

@@ -1,6 +1,6 @@
 <PoliCheckExclusions>
     <!--Each of these exclusions is a folder name -if \[name]\exists in the file path, it will be skipped -->
-    <Exclusion Type="FolderPathFull">NODE_MODULES</Exclusion>
+    <Exclusion Type="FolderPathFull">NODE_MODULES|DIST</Exclusion>
     <!--Each of these exclusions is a folder name -if any folder or file starts with "\[name]", it will be skipped -->
     <!--<Exclusion Type="FolderPathStart">ABC|XYZ</Exclusion>-->
     <!--Each of these file types will be completely skipped for the entire scan -->