LDEV-3332: fix tiles-config.dtd version used.
LAMS is shipped with tiles 1.1 version (included in struts). Fix tiles configuration to use tiles-config-1_1.dtd. This was another resource, that was loaded from internet during Wildfly startup (since used dtd version was not present in struts.jar).
It should be now possible to start Wildfly with LAMS without internet connection.