Add version build check

Author: epinna

modules/exploits/unix/http/vmturbo_vmtadmin_exec_noauth.rb

@@ -93,7 +93,7 @@ def check
       return Exploit::CheckCode::Unknown
     end
 
-    if version and version <= "4.6"
+    if version and version <= "4.6" and build < "28657"
       return Exploit::CheckCode::Appears
     else
       return Exploit::CheckCode::Safe