FAB-14865 - Fix log message

This CR fixes a log message such that it prints the
height in readable form as opposed to in hex.

Not closing this Jira for now - as we can use this to
fix the similar issue elsewhere as well

Change-Id: Id4b79cc280605a23bc00589497b4f0120a72d99a
Signed-off-by: manish <manish.sethi@gmail.com>

core/ledger/kvledger/txmgmt/txmgr/lockbasedtxmgr/helper.go

@@ -146,7 +146,7 @@ func (h *queryHelper) getPrivateData(ns, coll, key string) ([]byte, error) {
 	}
 	if !version.AreSame(hashVersion, ver) {
 		return nil, &txmgr.ErrPvtdataNotAvailable{Msg: fmt.Sprintf(
-			"private data matching public hash version is not available. Public hash version = %#v, Private data version = %#v",
+			"private data matching public hash version is not available. Public hash version = %s, Private data version = %s",
 			hashVersion, ver)}
 	}
 	if h.rwsetBuilder != nil {

core/ledger/kvledger/txmgmt/version/version.go

@@ -16,7 +16,11 @@ limitations under the License.
 
 package version
 
-import "github.com/hyperledger/fabric/common/ledger/util"
+import (
+	"fmt"
+
+	"github.com/hyperledger/fabric/common/ledger/util"
+)
 
 // Height represents the height of a transaction in blockchain
 type Height struct {
@@ -63,6 +67,11 @@ func (h *Height) Compare(h1 *Height) int {
 	return -1
 }
 
+// String returns string for printing
+func (h *Height) String() string {
+	return fmt.Sprintf("{BlockNum: %d, TxNum: %d}", h.BlockNum, h.TxNum)
+}
+
 // AreSame returns true if both the heights are either nil or equal
 func AreSame(h1 *Height, h2 *Height) bool {
 	if h1 == nil {