Add help message for the new env var in snap

snap-src/bin/wekan-help

@@ -254,21 +254,25 @@ echo -e "Ldap Default Domain."
 echo -e "The default domain of the ldap it is used to create email if the field is not map correctly with the LDAP_SYNC_USER_DATA_FIELDMAP:"
 echo -e "\t$ snap set $SNAP_NAME LDAP_DEFAULT_DOMAIN=''"
 echo -e "\n"
-echo -e "Logout with timer."
-echo -e "Enable or not the option that allows to disconnect an user after a given time:"
-echo -e "\t$ snap set $SNAP_NAME LOGOUT_WITH_TIMER='true'"
-echo -e "\n"
-echo -e "Logout in."
-echo -e "Logout in how many days:"
-echo -e "\t$ snap set $SNAP_NAME LOGOUT_IN='1'"
-echo -e "\n"
-echo -e "Logout on hours."
-echo -e "Logout in how many hours:"
-echo -e "\t$ snap set $SNAP_NAME LOGOUT_ON_HOURS='9'"
-echo -e "\n"
-echo -e "Logout on minutes."
-echo -e "Logout in how many minutes:"
-echo -e "\t$ snap set $SNAP_NAME LOGOUT_ON_MINUTES='5'"
+# echo -e "Logout with timer."
+# echo -e "Enable or not the option that allows to disconnect an user after a given time:"
+# echo -e "\t$ snap set $SNAP_NAME LOGOUT_WITH_TIMER='true'"
+# echo -e "\n"
+# echo -e "Logout in."
+# echo -e "Logout in how many days:"
+# echo -e "\t$ snap set $SNAP_NAME LOGOUT_IN='1'"
+# echo -e "\n"
+# echo -e "Logout on hours."
+# echo -e "Logout in how many hours:"
+# echo -e "\t$ snap set $SNAP_NAME LOGOUT_ON_HOURS='9'"
+# echo -e "\n"
+# echo -e "Logout on minutes."
+# echo -e "Logout in how many minutes:"
+# echo -e "\t$ snap set $SNAP_NAME LOGOUT_ON_MINUTES='5'"
+# echo -e "\n"
+echo -e "Default authentication method."
+echo -e "The default authentication method used if a user does not exist to create and authenticate him"
+echo -e "\t$ snap set $SNAP_NAME DEFAULT_AUTHENTICATION_METHOD='ldap'"
 echo -e "\n"
 # parse config file for supported settings keys
 echo -e "wekan supports settings keys"