Issue 2924 - Move session cleanup to not collide with sync

manifests/issuesserver.pp

 node 'issues1' {
 
   include private::trac
 
   class {'trac':
     domain => 'issues.adblockplus.org',
     certificate => 'issues.adblockplus.org_sslcert.pem',
     private_key => 'issues.adblockplus.org_sslcert.key',
     is_default => true,
   }
@@ skipping 52 matching lines @@
 
   cron {'trac_session_cleanup':
     command => "$mysql trac --execute ' \
       DELETE session, session_attribute FROM session \
       JOIN session_attribute ON session.sid = session_attribute.sid \
       AND session.authenticated = session_attribute.authenticated \
       WHERE session.authenticated = 0 AND \
       session.last_visit < UNIX_TIMESTAMP(NOW() - INTERVAL 10 DAY)' >/dev/null",
     ensure => present,
     hour => 1,
-    minute => 0,
+    minute => 15,
     require => Trac::Instance['issues'],
     user => trac,
   }
 
   cron {'trac_account_cleanup':
     command => "$mysql trac --execute ' \
       DELETE session, session_attribute FROM session \
       JOIN session_attribute AS session_data ON session.sid = session_data.sid \
       AND session.authenticated = session_data.authenticated \
       JOIN session_attribute ON session.sid = session_attribute.sid \
       AND session.authenticated = session_attribute.authenticated \
       WHERE session_data.name = \"email_verification_token\" AND \
       session.last_visit < UNIX_TIMESTAMP(NOW() - INTERVAL 5 DAY)' >/dev/null",
     ensure => present,
     hour => 2,
     minute => 0,
     require => Trac::Instance['issues'],
     user => trac,
   }
 
   # https://issues.adblockplus.org/ticket/3787
   customservice::supervisor {"spawn-fcgi":
     ensure => 'present',
     pidfile => "/var/run/500-tracd_issues_spawn-fcgi.pid",
   }
 }