Note that scontrol show config does not filter

The scontrol man page indicated that "scontrol show config NAME"
would only print the named configuration parameter, but there is
not code to do that in Slurm.

doc/man/man1/scontrol.1

@@ -341,9 +341,8 @@ Display the state of the specified entity with the specified identification.
 \fIhostnames\fP
 (also \fIblock\fP or \fIsubmp\fP on BlueGene systems).
 \fIID\fP can be used to identify a specific element of the identified
-entity: the configuration parameter name, job ID, node name, partition name,
-reservation name, or job step ID for \fIconfig\fP, \fIjob\fP, \fInode\fP,
-\fIpartition\fP, or \fIstep\fP respectively.
+entity: job ID, node name, partition name, reservation name, or job step ID for
+\fIjob\fP, \fInode\fP, \fIpartition\fP, or \fIstep\fP respectively.
 For an \fIENTITY\fP of \fItopology\fP, the \fIID\fP may be a node or switch name.
 If one node name is specified, all switches connected to that node (and
 their parent switches) will be shown.