REORG: include: move http_ana.h to haproxy/http_ana{,-t}.h

It was moved without any change, however many callers didn't need it at
all. This was a consequence of the split of proto_http.c into several
parts that resulted in many locations to still reference it.
diff --git a/src/cache.c b/src/cache.c
index 80bc545..36c54a8 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -14,6 +14,7 @@
 #include <haproxy/api.h>
 #include <haproxy/channel.h>
 #include <haproxy/cli.h>
+#include <haproxy/http_ana.h>
 #include <haproxy/http_htx.h>
 #include <haproxy/http_rules.h>
 #include <haproxy/shctx.h>
@@ -26,7 +27,6 @@
 
 #include <proto/proxy.h>
 #include <proto/filters.h>
-#include <proto/http_ana.h>
 #include <proto/log.h>
 #include <proto/stream.h>