Change check 1.15

Check is successful in case --kubelet-https is set to true OR missing

cfg/master.yaml

@@ -64,11 +64,14 @@ groups:
       audit: "ps -ef | grep kube-apiserver | grep -v grep"
       tests: 
         test_items:
+        bin_flag: or
         - flag: "--kubelet-https"
           compare:
             op: eq
             value: true
           set: true
+        - flag: "--kubelet-https"
+          set: false
       remediation: "Edit the $kubeConfDir/apiserver file on the master node and remove 
               the --kubelet-https argument from the KUBE_API_ARGS parameter."
       scored: true