config: add dynamic generation of relaxng schema for config validation
Add new tool ccs_update_schema
Modify ccs_config_validate to call ccs_update_schema
This feature requires resource-agents 3.9.2 and fence-agents 3.1.5 and xsltproc
available on the installed system.
Resolves: rhbz#680930
Reviewed-by: Lon Hohberger <lhh@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>