added the test/conf/ directory for config files use by the test suite

test/conf/default_access.conf

@@ -0,0 +1,2 @@
+SOURCE: ANY;
+KEY: fwknoptest;

test/conf/default_fwknopd.conf

@@ -0,0 +1,4 @@
+#
+# The default fwknopd.conf contains only comments since defaults are defined in
+# code and modified via the config file
+#

test/conf/override_fwknopd.conf

@@ -0,0 +1 @@
+ENABLE_PCAP_PROMISC     Y;