Add 'kev' tag and update matcher settings

javascript/cves/2018/CVE-2018-8011.yaml

@@ -27,7 +27,7 @@ info:
     vendor: apache
     product: http_server
     shodan-query: cpe:"cpe:2.3:a:apache:http_server"
-  tags: cve,cve2018,js,apache,httpd,dos,vkev
+  tags: cve,cve2018,js,apache,httpd,dos,vkev,kev
 
 javascript:
   - code: |
@@ -78,6 +78,8 @@ javascript:
       Port: 80,443 # if port not specified, defaults to both 80 and 443
       exclude-ports: "0" # override default skip list of 80,443,8080,8443
 
+    stop-at-first-match: true
+
     matchers-condition: and
     matchers:
       - type: word