extra_vars and image_name parametrization added

PROD-18791

Change-Id: Ic685ada838833a121b574272fee03796991cbe14
diff --git a/Jenkinsfile b/Jenkinsfile
index 6769e0e..1b45d1f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -134,6 +134,8 @@
                                     }else{
                                         throw new Exception("Qemu image convert failed")
                                     }
+                                } else {
+                                        throw new Exception("No Qemu images with '-qemu-' in its path")
                                 }
                             }
                             if (buildTypes.contains("docker")) {
@@ -146,6 +148,8 @@
                                     }else{
                                         throw new Exception("pbzip2 image convert failed")
                                     }
+                                } else {
+                                        throw new Exception("No Docker images with '-docker-' in its path")
                                 }
                             }