[DockerImageScanner] Add debug information on CVE not sent to NVD API server

RE-1233

Change-Id: I8daf966bdd600be78173d91b8c82259409f311c3
diff --git a/src/com/mirantis/mk/DockerImageScanner.groovy b/src/com/mirantis/mk/DockerImageScanner.groovy
index 2a62a92..d005be0 100644
--- a/src/com/mirantis/mk/DockerImageScanner.groovy
+++ b/src/com/mirantis/mk/DockerImageScanner.groovy
@@ -171,7 +171,7 @@
             sleep sleepTimeOnBan
             response = callREST("${nvdApiUrl}/${cve}", '')
         } else {
-            return
+            break
         }
     }
     if (response['responseCode'] == 200) {
@@ -341,6 +341,8 @@
                                     if (filter_mke_severity) {
                                         jira_description += nvdNistGovCveUrl + cveId + '\n'
                                     }
+                                } else {
+                                    print "No info about ${cveId} item from NVD API server"
                                 }
                             } else {
                                 print 'nvdApiUrl var is not specified.'