BUG/MINOR: spoe: correction of setting bits for analyzer

When a SPOE filter starts the response analyze, the wrong flag is tested on the
pre_analyzers bit field. AN_RES_INSPECT must be tested instead of
SPOE_EV_ON_TCP_RSP.

This patch must be backported to all versions with the SPOE support, i.e as far
as 1.7.
diff --git a/src/flt_spoe.c b/src/flt_spoe.c
index 49d7466..4790f59 100644
--- a/src/flt_spoe.c
+++ b/src/flt_spoe.c
@@ -3187,7 +3187,7 @@
 		ctx->flags |= SPOE_CTX_FL_CLI_CONNECTED;
 	}
 	else {
-		if (filter->pre_analyzers & SPOE_EV_ON_TCP_RSP)
+		if (filter->pre_analyzers & AN_RES_INSPECT)
 			chn->analysers |= AN_RES_INSPECT;
 
 		if (ctx->flags & SPOE_CTX_FL_SRV_CONNECTED)