Unify ids in peer struct

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

goKMS/kms/peers/peers.go

@@ -38,7 +38,7 @@ type GRPCClient struct {
 type Peer struct {
 	peerClient          *GRPCClient
 	peerStatus          KmsPeerStatus
-	peerKmsId           uuid.UUID // NOTE: might be changed in the future
+	peerKmsId           uuid.UUID
 	interComAddr        string
 	servingQuantumModul QuantumModule
 	tcpSocket           *net.TCPAddr // the IP address and TCP port (aka socket) of the kms peer
@@ -46,7 +46,6 @@ type Peer struct {
 	et                  crypto.CryptoAlgorithm
 	// NOTE: currently not used, could be of usage later on
 	// name                string    // the name of the kms peer
-	id       uuid.UUID // uuid of the peer
 	quit     chan bool // cancel the peer goroutine
 	eventBus *event.EventBus
 }
@@ -57,9 +56,16 @@ func NewKmsPeer(peerKmsId string, servQM QuantumModule, tcpSocketStr string, int
 		return nil, fmt.Errorf("QuantumModule with ID: %s, already has a peer", servQM.ID())
 	}
 
-	peerKmsIdUUID, err := uuid.Parse(peerKmsId)
-	if err != nil {
-		return nil, err
+	var peerKmsIdUUID uuid.UUID
+	if peerKmsId == "" {
+		peerKmsIdUUID = uuid.New()
+	} else {
+		id, err := uuid.Parse(peerKmsId)
+		if err != nil {
+			return nil, err
+		}
+
+		peerKmsIdUUID = id
 	}
 
 	tcpSocket, err := net.ResolveTCPAddr("tcp", tcpSocketStr)
@@ -82,7 +88,6 @@ func NewKmsPeer(peerKmsId string, servQM QuantumModule, tcpSocketStr string, int
 		tcpSocket:           tcpSocket,
 		TcpSocketStr:        tcpSocketStr,
 		et:                  crypto.NewAES(),
-		id:                  uuid.New(),
 		quit:                make(chan bool),
 		eventBus:            eventBus,
 	}
@@ -212,7 +217,3 @@ func (ph *Peer) SetStatus(updateStatus KmsPeerStatus) {
 func (ph *Peer) GetKmsPeerId() uuid.UUID {
 	return ph.peerKmsId
 }
-
-func (ph *Peer) Id() uuid.UUID {
-	return ph.id
-}