update dlz_minimal.h

the addition of support for ECS client information in DLZ
modules omitted some necessary changes to build modules
in contrib.

lib/dns/include/dns/clientinfo.h

@@ -51,6 +51,10 @@ ISC_LANG_BEGINDECLS
 *****/
 
 #define DNS_CLIENTINFO_VERSION 3
+/*
+ * Any updates to this structure should also be applied in
+ * contrib/modules/dlz/dlz_minmal.h.
+ */
 typedef struct dns_clientinfo {
 	uint16_t  version;
 	void     *data;
@@ -64,6 +68,10 @@ typedef isc_result_t (*dns_clientinfo_sourceip_t)(dns_clientinfo_t *client,
 #define DNS_CLIENTINFOMETHODS_VERSION 2
 #define DNS_CLIENTINFOMETHODS_AGE     1
 
+/*
+ * Any updates to this structure should also be applied in
+ * contrib/modules/dlz/dlz_minmal.h.
+ */
 typedef struct dns_clientinfomethods {
 	uint16_t		  version;
 	uint16_t		  age;

lib/dns/include/dns/ecs.h

@@ -33,6 +33,10 @@
 #define ECS_MAX_V6_SCOPE 56
 #endif
 
+/*
+ * Any updates to this structure should also be applied in
+ * contrib/modules/dlz/dlz_minmal.h.
+ */
 struct dns_ecs {
 	isc_netaddr_t addr;
 	uint8_t	      source;

lib/isc/include/isc/netaddr.h

@@ -27,6 +27,10 @@
 
 ISC_LANG_BEGINDECLS
 
+/*
+ * Any updates to this structure should also be applied in
+ * contrib/modules/dlz/dlz_minmal.h.
+ */
 struct isc_netaddr {
 	unsigned int family;
 	union {

lib/isc/include/isc/sockaddr.h

@@ -23,6 +23,10 @@
 
 #include <sys/un.h>
 
+/*
+ * Any updates to this structure should also be applied in
+ * contrib/modules/dlz/dlz_minmal.h.
+ */
 struct isc_sockaddr {
 	union {
 		struct sockaddr		sa;