prefilter/multibuf: test with multiple packets

Ticket: 7326

diff --git a/tests/prefilter-multibuf-multipkts/README.md b/tests/prefilter-multibuf-multipkts/README.md
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+Test
+====
+
+Test that multibuffer is prefiltered the right way, even if occurences of buffers
+are spanned over multiple packets, and the first try does not match.
+
+https://redmine.openinfosecfoundation.org/issues/7326
+
+PCAP
+====
+
+Pcap crafted with some http server and some python client that delays or not the writing of the headers

diff --git a/tests/prefilter-multibuf-multipkts/input.pcap b/tests/prefilter-multibuf-multipkts/input.pcap
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Binary files /dev/null and b/tests/prefilter-multibuf-multipkts/input.pcap differ

diff --git a/tests/prefilter-multibuf-multipkts/test.rules b/tests/prefilter-multibuf-multipkts/test.rules
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+++ b/tests/prefilter-multibuf-multipkts/test.rules
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+alert http any any -> any any ( sid: 2; http.stat_code; content: "200"; fast_pattern; http.response_header; content: "first";)
+alert http any any -> any any ( sid: 3; http.stat_code; content: "200"; http.response_header; content: "first"; fast_pattern;)

diff --git a/tests/prefilter-multibuf-multipkts/test.yaml b/tests/prefilter-multibuf-multipkts/test.yaml
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+requires:
+  min-version: 8
+
+args:
+- -k none
+
+checks:
+- filter:
+    count: 1
+    match:
+      event_type: alert
+      alert.signature_id: 2
+- filter:
+    count: 1
+    match:
+      event_type: alert
+      alert.signature_id: 3