Adds a test case for http auth unrecognized

tests/http-auth-unrecognized/README.md

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+# Description
+
+Test http unrecognized authorisation method
+
+# PCAP
+
+The pcap comes from running
+`python -m SimpleHTTPServer 8000` or `python3 -m http.server` as a server  and the following command
+`curl --header "Authorization: Turbo customAuthDataHere" 127.0.0.1:8000/` as a client

tests/http-auth-unrecognized/test.rules

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+alert http any any -> any any (msg:"SURICATA HTTP Request unrecognized authorization method"; flow:established,to_server; app-layer-event:http.request_auth_unrecognized; flowint:http.anomaly.count,+,1; classtype:protocol-command-decode; sid:1; rev:1;)

tests/http-auth-unrecognized/test.yaml

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+requires:
+  features:
+    - HAVE_LIBJANSSON
+
+# disables checksum verification
+args:
+  - -k none
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 1