Fix inconsistent spacing in dovecot/dovecot.conf and postfix/main.cf (#3511)

* Fix inconsistent spacing in dovecot.conf

* Fix inconsistent spacing in main.cf

data/conf/dovecot/dovecot.conf

@@ -37,7 +37,7 @@ ssl_cipher_list = ALL:!ADH:!LOW:!SSLv2:!SSLv3:!EXP:!aNULL:!eNULL:!3DES:!MD5:!PSK
 ssl_options = no_compression no_ticket
 
 # New in Dovecot 2.3
-ssl_dh=</etc/ssl/mail/dhparams.pem
+ssl_dh = </etc/ssl/mail/dhparams.pem
 # Dovecot 2.2
 #ssl_dh_parameters_length = 2048
 log_timestamp = "%Y-%m-%d %H:%M:%S "
@@ -361,7 +361,7 @@ plugin {
   acl_anyone = </etc/dovecot/acl_anyone
   acl_shared_dict = file:/var/vmail/shared-mailboxes.db
   acl = vfile
-  last_login_dict=</etc/dovecot/last_login
+  last_login_dict = </etc/dovecot/last_login
   last_login_key = last-login/%s/%u
   fts = solr
   fts_autoindex = yes