Version of cxf-rt-transports-http-undertow is missing in spring boot 2 BOM chain.
http://indy.psi.redhat.com/browse/maven/group/builds-untested/org/jboss/redhat-fuse/fabric8-project-bom-camel-spring-boot/7.4.0.fuse-sb2-740006-redhat-00002/