Make gerrit email server configurable

Sometimes people need to send mail through a smarthost. Allow that.

Change-Id: I66ff43a3ca4fce63500755d16be3aa891d55bc75

modules/exim/manifests/init.pp

@@ -3,6 +3,7 @@ class exim(
   $queue_interval = '30m',
   $queue_run_max = '5',
   $queue_smtp_domains = '',
+  $smarthost = '',
   $sysadmin = []
 ) {
 

modules/exim/templates/exim4.conf.erb

@@ -606,12 +606,21 @@ mailman_router:
 # If the DNS lookup fails, no further routers are tried because of the no_more
 # setting, and consequently the address is unrouteable.
 
+<% if smarthost -%>
+smarthost:
+  driver = manualroute
+  domains = !+local_domains
+  transport = remote_smtp
+  route_list = * <%= smarthost %>
+  no_more
+<% else -%>
 dnslookup:
   driver = dnslookup
   domains = ! +local_domains
   transport = remote_smtp
   ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
   no_more
+<% end -%>
 
 # The remaining routers handle addresses in the local domain(s), that is those
 # domains that are defined by "domainlist local_domains" above.

modules/gerrit/manifests/init.pp

@@ -18,6 +18,10 @@
 #     The URL to use for OpenID in SSO mode.
 #   email:
 #     The email address Gerrit should use when sending mail.
+#   smtpserver:
+#     The smtp server that Gerrit should send mail through.
+#   sendemail_from:
+#     gerrit.conf value for sendemail.from.
 #   database_poollimit:
 #   container_heaplimit:
 #   core_packedgitopenfiles:
@@ -88,6 +92,8 @@ class gerrit(
   $ssh_project_rsa_pubkey_contents = '', # If left empty will not create file.
   $openidssourl = 'https://login.launchpad.net/+openid',
   $email = '',
+  $smtpserver = 'localhost',
+  $sendemail_from = 'MIXED',
   $database_poollimit = '',
   $container_heaplimit = '',
   $core_packedgitopenfiles = '',

modules/gerrit/templates/gerrit.config.erb

@@ -19,7 +19,8 @@
 	cookieSecure = true
 	contributorAgreements = true
 [sendemail]
-	smtpServer = localhost
+	smtpServer = <%= smtpserver %>
+	from = <%= sendemail_from %>
 [container]
 	user = gerrit2
 	javaHome = <%= java_home %>