temp!

Signed-off-by: Alexandros Filios <alexandros.filios@ibm.com>

Author: alexandrosfilios

platform/view/services/db/driver/sql/postgres/vault.go

@@ -113,9 +113,9 @@ func (db *VaultPersistence) CreateSchema() error {
 	CREATE TABLE IF NOT EXISTS %s (
 		ns TEXT NOT NULL,
 		pkey TEXT NOT NULL,
-		val BYTEA DEFAULT '',
-		kversion BYTEA DEFAULT '',
-		metadata BYTEA DEFAULT '',
+		val BYTEA,
+		kversion BYTEA,
+		metadata BYTEA,
 		PRIMARY KEY (pkey, ns)
 	);`, db.tables.StatusTable, driver.Unknown, db.tables.StatusTable, db.tables.StatusTable,
 		db.tables.StateTable,