move credentials as separate package (#5115)

cmd/lock-instrument.go

@@ -17,7 +17,6 @@
 package cmd
 
 import (
-	"crypto/rand"
 	"fmt"
 	"time"
 )
@@ -258,13 +257,5 @@ func (n *nsLockMap) deleteLockInfoEntryForOps(param nsParam, opsID string) error
 
 // Return randomly generated string ID
 func getOpsID() string {
-	const opsIDLen = 16
-	opsIDBytes := make([]byte, opsIDLen)
-	if _, err := rand.Read(opsIDBytes); err != nil {
-		panic(err)
-	}
-	for i := 0; i < opsIDLen; i++ {
-		opsIDBytes[i] = alphaNumericTable[opsIDBytes[i]%alphaNumericTableLen]
-	}
-	return string(opsIDBytes)
+	return mustGetUUID()
 }