Fix __letsencrypt_cert type: use object id as domain if domain param is not specified

cdist/conf/type/__letsencrypt_cert/gencode-remote

@@ -15,7 +15,13 @@ case "${state}" in
 		echo remove >> "${__messages_out:?}"
 	;;
 	present)
-		requested_domains="${__object}/parameter/domain"
+		domain_param_file="${__object}/parameter/domain"
+		requested_domains=$(mktemp domain.cdist.XXXXXXXXXX)
+		if [ -f "${domain_param_file}" ]; then
+			cp "${domain_param_file}" "${requested_domains}"
+		else
+			echo "$__object_id" >> "${requested_domains}"
+		fi
 
 		staging=no
 		if [ -f "${__object}/parameter/staging" ]; then

cdist/conf/type/__letsencrypt_cert/man.rst

@@ -14,15 +14,13 @@ Automatically obtain a Let's Encrypt SSL certificate using Certbot.
 REQUIRED PARAMETERS
 -------------------
 
+object id
+    A cert name. If domain parameter is not specified then it is used
+    as a domain to be included in the certificate.
+
 admin-email
     Where to send Let's Encrypt emails like "certificate needs renewal".
 
-REQUIRED MULTIPLE PARAMETERS
-----------------------------
-
-domain
-    A domain to be included in the certificate.
-
 OPTIONAL PARAMETERS
 -------------------
 
@@ -44,6 +42,10 @@ OPTIONAL MULTIPLE PARAMETERS
 renew-hook
     Renew hook command directly passed to Certbot in cron job.
 
+domain
+    Domains to be included in the certificate. When specified then object id
+    is not used as a domain.
+
 BOOLEAN PARAMETERS
 ------------------
 
@@ -70,6 +72,17 @@ EXAMPLES
 
 .. code-block:: sh
 
+    # use object id as domain
+    __letsencrypt_cert example.com \
+        --admin-email root@example.com \
+        --automatic-renewal \
+        --renew-hook "service nginx reload" \
+        --webroot /data/letsencrypt/root
+
+.. code-block:: sh
+
+    # domain parameter is specified so object id is not used as domain
+    # and example.com needs to be included again with domain parameter
     __letsencrypt_cert example.com \
         --admin-email root@example.com \
         --automatic-renewal \
@@ -79,7 +92,6 @@ EXAMPLES
         --renew-hook "service nginx reload" \
         --webroot /data/letsencrypt/root
 
-
 AUTHORS
 -------
 

cdist/conf/type/__letsencrypt_cert/parameter/optional_multiple

@@ -1 +1,2 @@
+domain
 renew-hook

cdist/conf/type/__letsencrypt_cert/parameter/required_multiple

@@ -1 +0,0 @@
-domain

docs/changelog

@@ -5,6 +5,7 @@ next:
 	* New type: __install_coreos (Ľubomír Kučera)
 	* Type __consul_agent: Add LSB init header (Nico Schottelius)
 	* Type __package_yum: Fix explorer when name contains package name with exact version specified (Aleksandr Dinu)
+	* Type __letsencrypt_cert: Use object id as domain if domain param is not specified (Darko Poljak)
 
 4.9.0: 2018-05-17
 	* Type __docker_stack: Use --with-registry-auth option (Ľubomír Kučera)