With the move to cxf 3.0.0 we are seeing these warnings.
10:03:35,013 INFO [org.apache.cxf.wsdl.service.factory.ReflectionServiceFactoryBean] (MSC service thread 1-7) Creating Service

SecurityService from WSDL: WEB-INF/wsdl/SecurityService.wsdl
10:03:35,016 WARNING [org.apache.cxf.catalog.OASISCatalogManager] (MSC service thread 1-7) Catalog found at jar:file:/home/rsearls/j1/wfly9-alessio-cxf-3/wildfly/dist/target/wildfly-9.0.0.Alpha1-SNAPSHOT/modules/system/layers/base/org/jboss/ws/jaxws-client/main/jbossws-cxf-client.jar!/META-INF/jax-ws-catalog.xml but no org.apache.xml.resolver.CatalogManager was found. Check the classpatch for an xmlresolver jar.
10:03:35,016 WARNING [org.apache.cxf.catalog.OASISCatalogManager]
(MSC service thread 1-7) Catalog found at
jar:file:/home/rsearls/j1/wfly9-alessio-cxf-3/wildfly/dist/target/wildfly-9.0.0.Alpha1-SNAPSHOT/
modules/system/layers/base/org/apache/cxf/impl/main/cxf-tools-wsdlto-frontend-jaxws.jar
!/META-INF/jax-ws-catalog.xml but no org.apache.xml.resolver.CatalogManager was found.
Check the classpatch for an xmlresolver jar.

These warning messages, "WARNING [org.apache.cxf.catalog.OASISCatalogManager]" are
occurring because the module dependencies for org.apache.xml-resolver is not declared
in modules/system/layers/base/org/apache/cxf/main/module.xml. The dependency is
declared in modules/system/layers/base/org/apache/cxf/impl/main/module.xml but does
not appear to be needed by this module.

Updating modules/system/layers/base/org/apache/cxf/main/module.xml will resolve the warnings.