Update pihole after setting a static local IP address

src/freedombone-controlpanel

@@ -1373,6 +1373,12 @@ Enter a static local IP address for this system.\n\nIt will typically be 192.168
             echo '#    network 192.168.7.0' >> /etc/network/interfaces
             echo '#    gateway 192.168.7.1' >> /etc/network/interfaces
         fi
+
+        # if pi-hole is installed then update the IP address it uses
+        if [ -f /usr/local/bin/pihole ]; then
+            function_check pihole_update
+            pihole_update
+        fi
     fi
 }