block 4.5to4.6 catalogue migration script

catalogue/migrations/liquibase/oracle/4.5to4.6.sql

@@ -3,6 +3,8 @@
 --changeset mvelosob:1 failOnError:true dbms:oracle
 --preconditions onFail:HALT onError:HALT
 --precondition-sql-check expectedResult:"4.5" SELECT CONCAT(CONCAT(CAST(SCHEMA_VERSION_MAJOR as VARCHAR(10)),'.'), CAST(SCHEMA_VERSION_MINOR AS VARCHAR(10))) AS CATALOGUE_VERSION FROM CTA_CATALOGUE;
+--precondition-sql-check expectedResult:"0.0" SELECT CONCAT(CONCAT(CAST(SCHEMA_VERSION_MAJOR as VARCHAR(10)),'.'), CAST(SCHEMA_VERSION_MINOR AS VARCHAR(10))) AS CATALOGUE_VERSION FROM CTA_CATALOGUE;
+--!!!THIS FALSE PRECONDITION IS HERE TO BLOCK AN UPGRADE WHILE THE DEVELOPMENT OF THE NEW CATALOGUE VERSION IS BEING DEVELOPED!!!
 UPDATE CTA_CATALOGUE SET STATUS='UPGRADING';
 UPDATE CTA_CATALOGUE SET NEXT_SCHEMA_VERSION_MAJOR=4;
 UPDATE CTA_CATALOGUE SET NEXT_SCHEMA_VERSION_MINOR=6;