Added 'SPAM' JobSttus to support NumberWhole

returning 422 HTTP status to indicate message is spammed.

src/main/java/altk/comm/engine/Job.java

@@ -25,6 +25,7 @@ public class Job
         SERVICE_PROVIDER_GENERATED_ERROR(true), // SMS
         SERVICE_PROVIDER_HTTP_ERROR(true),      // SMS
         SERVICE_PROVIDER_CONNECT_ERROR(true),   // SMS
+        SPAM(true),                             // SMS
         SERVICE_PROVIDER_OTHER_ERROR(true),     // Email
         CANCELED(true),       // Voice - is it really?
         EXPIRED(true),        // Voice - is it really?