Cannot build wildfly-camel / missing slf4j-log4j12 artefact

Currently, I cannot build wfc-2.4-redhat
```
[ERROR] Failed to execute goal on project wildfly-camel-modules: Could not resolve dependencies for project org.wildfly.camel:wildfly-camel-modules:pom:2.4.0.redhat-630000-SNAPSHOT: Could not find artifact org.slf4j:slf4j-log4j12:jar:1.7.7.redhat-2 in central (http://repo.maven.apache.org/maven2) -> [Help 1]
```
This artefact is missing in all of these locations
```
Downloading: http://repo.maven.apache.org/maven2/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
Downloading: http://repository.jboss.org/nexus/content/groups/public/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
Downloading: https://maven.repository.redhat.com/ga/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
Downloading: https://maven.repository.redhat.com/earlyaccess/all/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
Downloading: http://repo.springsource.org/libs-release-remote/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
Downloading: http://download.eng.bos.redhat.com/brewroot/repos/jb-eap-6.4-rhel-6-build/latest/maven/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
Downloading: https://repository.jboss.org/nexus/content/groups/ea/org/slf4j/slf4j-log4j12/1.7.7.redhat-2/slf4j-log4j12-1.7.7.redhat-2.jar
```