docs: run make Makefile.doc (#2210)

No other changes.

Signed-off-by: Miek Gieben <miek@miek.nl>

man/coredns-federation.7

@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "COREDNS\-FEDERATION" "7" "June 2018" "CoreDNS" "CoreDNS plugins"
+.TH "COREDNS\-FEDERATION" "7" "October 2018" "CoreDNS" "CoreDNS plugins"
 .
 .SH "NAME"
 \fIfederation\fR \- enables federated queries to be resolved via the kubernetes plugin\.
@@ -18,6 +18,7 @@ Enabling \fIfederation\fR without also having \fIkubernetes\fR is a noop\.
 
 federation [ZONES\.\.\.] {
     NAME DOMAIN
+    upstream [ADDRESS\.\.\.]
 }
 .
 .fi
@@ -25,6 +26,9 @@ federation [ZONES\.\.\.] {
 .IP "\(bu" 4
 Each \fBNAME\fR and \fBDOMAIN\fR defines federation membership\. One entry for each\. A duplicate \fBNAME\fR will silently overwrite any previous value\.
 .
+.IP "\(bu" 4
+\fBupstream\fR [\fBADDRESS\fR\.\.\.] defines the upstream resolvers used for resolving the \fBCNAME\fR target produced by this plugin\. If no \fBADDRESS\fR is given, CoreDNS will resolve External Services against itself\. \fBADDRESS\fR can be an IP, an IP:port, or a path to a file structured like resolv\.conf\.
+.
 .IP "" 0
 .
 .SH "EXAMPLES"
@@ -39,6 +43,7 @@ Here we handle all service requests in the \fBprod\fR and \fBstage\fR federation
     federation cluster\.local {
         prod prod\.feddomain\.com
         staging staging\.feddomain\.com
+        upstream
     }
 }
 .
@@ -58,6 +63,7 @@ cluster\.local {
     federation {
         prod prod\.feddomain\.com
         staging staging\.feddomain\.com
+        upstream
     }
 }
 .