jboss-ejb-3.1-api, jboss-interceptors-1.1-api, jboss-jaxrpc-1.1-api, jboss-servlet-3.0-api and jboss-transaction-1.1-api have Buildrequires: maven-plugin-cobertura, but the package has not been released on http://ftp.redhat.com/pub/redhat/rhel/beta/7/x86_64/os/Packages/ .
maven-plugin-cobertura was intentionally not released. Of course the other packages should not depend on maven-plugin-cobertura. These are separate bugs in respective packages and are already known:
jboss-ejb-3.1-api: bug #1029971
jboss-interceptors-1.1-api: bug #1029974
jboss-jaxrpc-1.1-api: bug #1029975
jboss-servlet-3.0-api: bug #1029976
jboss-transaction-1.1-api: bug #1029979
See respective bugs for more information.
As explained above, this is not a bug in maven-plugin-cobertura.
Closing as NOTABUG.
*** Bug 1050939 has been marked as a duplicate of this bug. ***