YARN-6117. SharedCacheManager does not start up. Contributed by Chris Trezzo.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/pom.xml

@@ -220,6 +220,7 @@
             <exclude>src/main/resources/webapps/yarn/.keep</exclude>
             <exclude>src/main/resources/webapps/applicationhistory/.keep</exclude>
             <exclude>src/main/resources/webapps/timeline/.keep</exclude>
+            <exclude>src/main/resources/webapps/sharedcache/.keep</exclude>
             <exclude>src/main/resources/webapps/cluster/.keep</exclude>
             <exclude>src/main/resources/webapps/test/.keep</exclude>
             <exclude>src/main/resources/webapps/proxy/.keep</exclude>