TESTS: move tests/*.cfg to tests/config

These are a collection of test files for a variety of features (old or
more recent). 2 or 3 files were found lying there non-committed and
were moved at the same time. A few deprecated or obsolete keywords were
updated to their recent equivalent. Many of these configurations are
made to trigger different parsing errors so it is normal that plenty
of them fail.

Now the tests directory is cleaner and easier to navigate through.
diff --git a/tests/conf/test-http-set-status.cfg b/tests/conf/test-http-set-status.cfg
new file mode 100644
index 0000000..0c66b16
--- /dev/null
+++ b/tests/conf/test-http-set-status.cfg
@@ -0,0 +1,32 @@
+global
+       maxconn 100
+
+defaults
+	mode http
+	timeout client 10000
+	timeout server 10000
+	timeout connect 10000
+
+# Expect HTTP/1.1 418 I'm a teapot
+listen http-response-set-status-defaultreason
+    bind :8001
+	server host 127.0.0.1:8080
+	http-response set-status 418
+
+# Expect HTTP/1.1 418 I'm a coffeepot
+listen http-response-set-status-customreason
+    bind :8002
+	server host 127.0.0.1:8080
+	http-response set-status 418 reason "I'm a coffeepot"
+
+# Expect config parse fail
+#listen parse-fail-string
+#    bind :8002
+#	server host 127.0.0.1:8080
+#	http-response set-status 418 reason
+
+# Expect config parse fail
+#listen parse-fail-keyword
+#    bind :8002
+#	server host 127.0.0.1:8080
+#	http-response set-status 418 "Missing reason keyword"