upgrading package: tomcat 8.5.20 -> 8.5.21

tomcat/tomcat.spec

@@ -31,8 +31,8 @@ Distribution: OpenPKG Community
 Class:        PLUS
 Group:        Web
 License:      Apache Software License 2.0
-Version:      8.5.20
-Release:      20170809
+Version:      8.5.21
+Release:      20170920
 
 #   list of sources
 Source0:      http://www.apache.org/dist/tomcat/tomcat-8/v%{version}/bin/apache-tomcat-%{version}.tar.gz