lists::monitoring: increase check_interval to 5 minutes

Increasing both check_interval and retry_interval from our
default of 1 minute to 5 minutes because these checks are
flapping a lot and cause a lot of noise on IRC.

This should mean we only get alerts if it's actually down hard for
15 minutes. (max_check_attempts 3 * retry_interval 5).

Change-Id: I63427824fbba27772c3ddbba2caf402d19ef7606

diff --git a/modules/profile/manifests/lists/monitoring.pp b/modules/profile/manifests/lists/monitoring.pp
index b3801d1..38432cd 100644
--- a/modules/profile/manifests/lists/monitoring.pp
+++ b/modules/profile/manifests/lists/monitoring.pp

@@ -80,6 +80,8 @@
         check_command  => "check_https_url_for_string!${lists_servername}!/postorius/lists/wikimedia-l.lists.wikimedia.org/!Wikimedia Mailing List",
         notes_url      => 'https://wikitech.wikimedia.org/wiki/Mailman/Monitoring',
         migration_task => 'T370157',
+        check_interval => 5,
+        retry_interval => 5,
     }
 
     monitoring::service { 'mailman_archives':
@@ -88,6 +90,8 @@
         check_command  => "check_https_url_for_string!${lists_servername}!/hyperkitty/list/wikimedia-l@lists.wikimedia.org/!Wikimedia Mailing List",
         notes_url      => 'https://wikitech.wikimedia.org/wiki/Mailman/Monitoring',
         migration_task => 'T370157',
+        check_interval => 5,
+        retry_interval => 5,
     }
 
     monitoring::service { 'mailman_listinfo_ssl_expiry':