[FAB-3297] PKCS8Info Version should be 0 and not 1

The Version field of the PKCSInfo structure can
be 0 or 1 but it turns out that most implementations
actually use 0 and more importantly Java libraries
expect it to be 0 as well.

This corrects the error.  I did not create another
JIRA as I'm just correcting the implementation

Change-Id: Iae7e1771df3654d097c8873d7c3f967afea9fadf
Signed-off-by: Gari Singh <gari.r.singh@gmail.com>

bccsp/utils/keys.go

@@ -114,7 +114,7 @@ func PrivateKeyToPEM(privateKey interface{}, pwd []byte) ([]byte, error) {
 		}
 
 		var pkcs8Key pkcs8Info
-		pkcs8Key.Version = 1
+		pkcs8Key.Version = 0
 		pkcs8Key.PrivateKeyAlgorithm = make([]asn1.ObjectIdentifier, 2)
 		pkcs8Key.PrivateKeyAlgorithm[0] = oidPublicKeyECDSA
 		pkcs8Key.PrivateKeyAlgorithm[1] = oidNamedCurve