MEDIUM: applet: Set the conn-stream as appctx owner instead of the stream-int

Because appctx is now an endpoint of the conn-stream, there is no reason to
still have the stream-interface as appctx owner. Thus, the conn-stream is
now the appctx owner.
diff --git a/src/flt_spoe.c b/src/flt_spoe.c
index 8b2de43..a12d75d 100644
--- a/src/flt_spoe.c
+++ b/src/flt_spoe.c
@@ -1135,7 +1135,7 @@
 static int
 spoe_send_frame(struct appctx *appctx, char *buf, size_t framesz)
 {
-	struct stream_interface *si = appctx->owner;
+	struct stream_interface *si = cs_si(appctx->owner);
 	int      ret;
 	uint32_t netint;
 
@@ -1161,7 +1161,7 @@
 static int
 spoe_recv_frame(struct appctx *appctx, char *buf, size_t framesz)
 {
-	struct stream_interface *si = appctx->owner;
+	struct stream_interface *si = cs_si(appctx->owner);
 	int      ret;
 	uint32_t netint;
 
@@ -1190,8 +1190,8 @@
 static int
 spoe_wakeup_appctx(struct appctx *appctx)
 {
-	si_want_get(appctx->owner);
-	si_rx_endp_more(appctx->owner);
+	si_want_get(cs_si(appctx->owner));
+	si_rx_endp_more(cs_si(appctx->owner));
 	appctx_wakeup(appctx);
 	return 1;
 }
@@ -1217,7 +1217,7 @@
 static void
 spoe_release_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si          = appctx->owner;
+	struct stream_interface *si          = cs_si(appctx->owner);
 	struct spoe_appctx      *spoe_appctx = SPOE_APPCTX(appctx);
 	struct spoe_agent       *agent;
 	struct spoe_context     *ctx, *back;
@@ -1337,7 +1337,7 @@
 static int
 spoe_handle_connect_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si    = appctx->owner;
+	struct stream_interface *si    = cs_si(appctx->owner);
 	struct spoe_agent       *agent = SPOE_APPCTX(appctx)->agent;
 	char *frame, *buf;
 	int   ret;
@@ -1403,7 +1403,7 @@
 static int
 spoe_handle_connecting_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si     = appctx->owner;
+	struct stream_interface *si     = cs_si(appctx->owner);
 	struct spoe_agent       *agent  = SPOE_APPCTX(appctx)->agent;
 	char  *frame;
 	int    ret;
@@ -1648,7 +1648,7 @@
 
 	/* Do not forget to remove processed frame from the output buffer */
 	if (trash.data)
-		co_skip(si_oc(appctx->owner), trash.data);
+		co_skip(si_oc(cs_si(appctx->owner)), trash.data);
   end:
 	return ret;
 }
@@ -1656,7 +1656,7 @@
 static int
 spoe_handle_processing_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si    = appctx->owner;
+	struct stream_interface *si    = cs_si(appctx->owner);
 	struct server           *srv   = objt_server(si_strm(si)->target);
 	struct spoe_agent       *agent = SPOE_APPCTX(appctx)->agent;
 	int ret, skip_sending = 0, skip_receiving = 0, active_s = 0, active_r = 0, close_asap = 0;
@@ -1779,7 +1779,7 @@
 static int
 spoe_handle_disconnect_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si    = appctx->owner;
+	struct stream_interface *si    = cs_si(appctx->owner);
 	struct spoe_agent       *agent = SPOE_APPCTX(appctx)->agent;
 	char *frame, *buf;
 	int   ret;
@@ -1832,7 +1832,7 @@
 static int
 spoe_handle_disconnecting_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si = appctx->owner;
+	struct stream_interface *si = cs_si(appctx->owner);
 	char  *frame;
 	int    ret;
 
@@ -1883,7 +1883,7 @@
   next:
 	/* Do not forget to remove processed frame from the output buffer */
 	if (trash.data)
-		co_skip(si_oc(appctx->owner), trash.data);
+		co_skip(si_oc(cs_si(appctx->owner)), trash.data);
 
 	return 0;
   stop:
@@ -1897,7 +1897,7 @@
 static void
 spoe_handle_appctx(struct appctx *appctx)
 {
-	struct stream_interface *si = appctx->owner;
+	struct stream_interface *si = cs_si(appctx->owner);
 	struct spoe_agent       *agent;
 
 	if (SPOE_APPCTX(appctx) == NULL)