disable erlang server test due to dependency issue (#375)

Author: wing328

pom.xml

@@ -974,7 +974,8 @@
                 <module>samples/client/petstore/elixir</module>
                 <module>samples/client/petstore/erlang-client</module>
                 <!-- servers -->
-                <module>samples/server/petstore/erlang-server</module>
+                <!-- disable erlang server test due to dependency issues
+                <module>samples/server/petstore/erlang-server</module> -->
                 <module>samples/server/petstore/jaxrs/jersey2</module>
                 <module>samples/server/petstore/jaxrs/jersey2-useTags</module>
                 <module>samples/server/petstore/spring-mvc</module>