set device identifire for certificate table

components/certificate-mgt/io.entgra.device.mgt.core.certificate.mgt.core/src/main/java/io/entgra/device/mgt/core/certificate/mgt/core/dao/impl/AbstractCertificateDAOImpl.java

@@ -53,8 +53,8 @@ public abstract class AbstractCertificateDAOImpl implements CertificateDAO{
         try {
             conn = this.getConnection();
             stmt = conn.prepareStatement(
-                    "INSERT INTO DM_DEVICE_CERTIFICATE (SERIAL_NUMBER, CERTIFICATE, TENANT_ID, USERNAME)"
-                    + " VALUES (?,?,?,?)");
+                    "INSERT INTO DM_DEVICE_CERTIFICATE (SERIAL_NUMBER, CERTIFICATE, TENANT_ID, USERNAME, DEVICE_IDENTIFIER)"
+                    + " VALUES (?,?,?,?,?)");
             PrivilegedCarbonContext threadLocalCarbonContext = PrivilegedCarbonContext.
                                                                                               getThreadLocalCarbonContext();
             String username = threadLocalCarbonContext.getUsername();
@@ -70,6 +70,7 @@ public abstract class AbstractCertificateDAOImpl implements CertificateDAO{
                 stmt.setBytes(2, bytes);
                 stmt.setInt(3, certificate.getTenantId());
                 stmt.setString(4, username);
+                stmt.setString(5, certificate.getDeviceIdentifier());
                 stmt.addBatch();
             }
             stmt.executeBatch();

components/certificate-mgt/io.entgra.device.mgt.core.certificate.mgt.core/src/main/java/io/entgra/device/mgt/core/certificate/mgt/core/impl/CertificateGenerator.java

@@ -871,6 +871,7 @@ public class CertificateGenerator {
                     new io.entgra.device.mgt.core.certificate.mgt.core.bean.Certificate();
             List<io.entgra.device.mgt.core.certificate.mgt.core.bean.Certificate> certificates = new ArrayList<>();
             certificate.setTenantId(tenantId);
+            certificate.setDeviceIdentifier(commonName);
             certificate.setCertificate(issuedCert);
             certificates.add(certificate);
             saveCertInKeyStore(certificates);