tls: adds a test for certificate without issuer

Ticket: #5439

diff --git a/tests/tls/tls-cert-noissuer/README.md b/tests/tls/tls-cert-noissuer/README.md
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+++ b/tests/tls/tls-cert-noissuer/README.md
@@ -0,0 +1,9 @@
+## PCAP
+
+PCAP comes from https://redmine.openinfosecfoundation.org/issues/5439
+
+## Related Ticket
+
+https://redmine.openinfosecfoundation.org/issues/5439
+
+Tests that certificates lacking an issuer are still parsed by Suricata

diff --git a/tests/tls/tls-cert-noissuer/test.yaml b/tests/tls/tls-cert-noissuer/test.yaml
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+++ b/tests/tls/tls-cert-noissuer/test.yaml
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+args:
+- -k none
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 1

diff --git a/tests/tls/tls-cert-noissuer/tls.pcap b/tests/tls/tls-cert-noissuer/tls.pcap
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index 0000000..7e5f593
Binary files /dev/null and b/tests/tls/tls-cert-noissuer/tls.pcap differ

diff --git a/tests/tls/tls-cert-noissuer/tls.rules b/tests/tls/tls-cert-noissuer/tls.rules
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+++ b/tests/tls/tls-cert-noissuer/tls.rules
@@ -0,0 +1 @@
+alert tls any any -> any any (msg:"test"; flow:established,to_client; tls.cert_subject; content:"localhost"; sid:1;)