MINOR: http: add support for "httponly" and "secure" cookie attributes

   httponly  This option tells haproxy to add an "HttpOnly" cookie attribute
             when a cookie is inserted. This attribute is used so that a
             user agent doesn't share the cookie with non-HTTP components.
             Please check RFC6265 for more information on this attribute.

   secure    This option tells haproxy to add a "Secure" cookie attribute when
             a cookie is inserted. This attribute is used so that a user agent
             never emits this cookie over non-secure channels, which means
             that a cookie learned with this flag will be presented only over
             SSL/TLS connections. Please check RFC6265 for more information on
             this attribute.
diff --git a/include/types/proxy.h b/include/types/proxy.h
index 1da0f9d..53dd96d 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -169,6 +169,8 @@
 #define PR_CK_NOC       0x00000010      /* add a 'Cache-control' header with the cookie */
 #define PR_CK_POST      0x00000020      /* don't insert cookies for requests other than a POST */
 #define PR_CK_PSV       0x00000040      /* cookie ... preserve */
+#define PR_CK_HTTPONLY  0x00000080      /* emit the "HttpOnly" attribute */
+#define PR_CK_SECURE    0x00000100      /* emit the "Secure" attribute */
 
 /* bits for sticking rules */
 #define STK_IS_MATCH	0x00000001	/* match on request fetch */