services: dhcp-client: Deprecate 'dhcp-client-service' procedure.

* gnu/services/networking.scm (dhcp-client-service-type): Add default
value.
* gnu/system/examples/bare-bones.tmpl: Use (service
dhcp-client-service-type) instead of (dhcp-client-service).
* gnu/system/examples/beaglebone-black.tmpl: Likewise.
* gnu/tests/base.scm (%avahi-os): Likewise.
* gnu/tests/databases.scm (%memcached-os): Likewise.
(%mongodb-os): Likewise.
* gnu/tests/dict.scm (%dicod-os): Likewise.
* gnu/tests/mail.scm (%opensmtpd-os): Likewise.
(%exim-os): Likewise.
(%dovecot-os): Likewise.
* gnu/tests/messaging.scm (run-xmpp-test): Likewise.
(run-bitlbee-test): Likewise.
* gnu/tests/monitoring.scm (%prometheus-node-exporter-os): Likewise.
* gnu/tests/networking.scm (%inetd-os): Likewise.
(run-iptables-test): Likewise.
* gnu/tests/nfs.scm (%base-os): Likewise.
* gnu/tests/rsync.scm (%rsync-os): Likewise.
* gnu/tests/ssh.scm (run-ssh-test): Likewise.
* gnu/tests/version-control.scm (%cgit-os): Likewise.
(%git-http-os): Likewise.
(%gitolite-os): Likewise.
* gnu/tests/virtualization.scm (%libvirt-os): Likewise.
* gnu/tests/web.scm (%httpd-os): Likewise.
(%nginx-os): Likewise.
(%varnish-os): Likewise.
(%php-fpm-os): Likewise.
(%hpcguix-web-os): Likewise.
(%tailon-os): Likewise.
* tests/guix-system.sh: Likewise.
* doc/guix.texi (Networking Services): Document
'dhcp-client-service-type' and remove 'dhcp-client-service'.

2 files changed, 2 insertions, 2 deletions

diff --git a/gnu/system/examples/bare-bones.tmpl b/gnu/system/examples/bare-bones.tmpl
index b763258e52..889dcabe64 100644
--- a/gnu/system/examples/bare-bones.tmpl
+++ b/gnu/system/examples/bare-bones.tmpl
@@ -44,7 +44,7 @@
 
   ;; Add services to the baseline: a DHCP client and
   ;; an SSH server.
-  (services (cons* (dhcp-client-service)
+  (services (cons* (service dhcp-client-service-type)
                    (service openssh-service-type
                             (openssh-configuration
                               (port-number 2222)))
diff --git a/gnu/system/examples/beaglebone-black.tmpl b/gnu/system/examples/beaglebone-black.tmpl
index d1130c76b6..efef682e3a 100644
--- a/gnu/system/examples/beaglebone-black.tmpl
+++ b/gnu/system/examples/beaglebone-black.tmpl
@@ -45,7 +45,7 @@
   ;; Globally-installed packages.
   (packages (cons* screen openssh %base-packages))
 
-  (services (cons* (dhcp-client-service)
+  (services (cons* (service dhcp-client-service-type)
                    ;; mingetty does not work on serial lines.
                    ;; Use agetty with board-specific serial parameters.
                    (agetty-service