tasks-jsf: Add WELD-000714 to Expected Warnings and Errors

tasks-jsf quickstarts now can throw a WELD-000714 warning:

WARN  [org.jboss.weld.Servlet] (default task-1) WELD-000714: HttpContextLifecycle guard leak detected. The Servlet container is not fully compliant. The value was 1

Based on https://issues.jboss.org/browse/WFLY-5310 and https://access.redhat.com/solutions/3269201 responses the warning could be added to tasks-jsf Server Log: Expected Warnings and Errors section.

Thanks.