The reason is that the openshift configuration in the lens is in the /var/www directory instead of under /etc.
(* Variable: filter *)
let filter = incl "/var/www/openshift/console/httpd/httpd.conf"
. incl "/var/www/openshift/console/httpd/conf.d/*.conf"
. incl "/var/www/openshift/broker/httpd/conf.d/*.conf"
. incl "/var/www/openshift/broker/httpd/httpd.conf"
. incl "/var/www/openshift/console/httpd/console.conf"
. incl "/var/www/openshift/broker/httpd/broker.conf"
IMHO putting config files under /var/www is not FHS compliant, and should be in /etc. However, to get going in meanwhile, you can add your config files to augeas and tell which lens to use to parse them:
$ cat /etc/foo.conf
BarDirective arg0 arg1 arg2 arg3
augtool> set /augeas/load/OpenShift_Http/incl[last()+1] /etc/foo.conf
augtool> ls /augeas/files/etc/foo.conf/
path = /files/etc/foo.conf
mtime = 1409507012
lens/ = @OpenShift_Http
augtool> print /files/etc/foo.conf/
/files/etc/foo.conf/FooConf/directive = "BarDirective"
/files/etc/foo.conf/FooConf/directive/arg = "arg0"
/files/etc/foo.conf/FooConf/directive/arg = "arg1"
/files/etc/foo.conf/FooConf/directive/arg = "arg2"
/files/etc/foo.conf/FooConf/directive/arg = "arg3"
And then you are all set ;-)