NOISSUE - Simplify local agent running in non sev-snp environment (#411)

* Add vtpm attestation support to agent service and server

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* Update mockery version to v2.53.2 and refactor VM factory to include logger

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* Send event notification when computation is stopped in agentService

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* Remove redundant assignment of Stderr in qemuVM Start method

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

* Rename SVM references to CVM in tracing, logging, metrics, and service layers

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

---------

Signed-off-by: Sammy Oina <sammyoina@gmail.com>

pkg/attestation/vtpm/vtpm.go

@@ -42,6 +42,8 @@ var (
 	ErrNoHashAlgo = errors.New("hash algo is not supported")
 )
 
+type VtpmAttest func(teeNonce []byte, vTPMNonce []byte, teeAttestaion bool) ([]byte, error)
+
 type tpmWrapper struct {
 	io.ReadWriteCloser
 }
@@ -163,6 +165,11 @@ func VTPMVerify(quote []byte, pubKeyTLS []byte, teeNonce []byte, vtpmNonce []byt
 	return nil
 }
 
+// EmptyAttest is a dummy attestation function that returns an empty attestation report.
+func EmptyAttest(teeNonce []byte, vTPMNonce []byte, teeAttestaion bool) ([]byte, error) {
+	return []byte{}, nil
+}
+
 func publicKeyToBytes(pubKey interface{}) ([]byte, error) {
 	derBytes, err := x509.MarshalPKIXPublicKey(pubKey)
 	if err != nil {