[FAB-14642] Decrease severity of BCCSP log entry

Change-Id: I3d2ca38865e27770977f4e6eb034f95c772b6382
Signed-off-by: Alessandro Sorniotti <ale.linux@sopit.net>

bccsp/factory/factory.go

@@ -58,7 +58,7 @@ type BCCSPFactory interface {
 // GetDefault returns a non-ephemeral (long-term) BCCSP
 func GetDefault() bccsp.BCCSP {
 	if defaultBCCSP == nil {
-		logger.Warning("Before using BCCSP, please call InitFactories(). Falling back to bootBCCSP.")
+		logger.Debug("Before using BCCSP, please call InitFactories(). Falling back to bootBCCSP.")
 		bootBCCSPInitOnce.Do(func() {
 			var err error
 			f := &SWFactory{}