Adds test for smb padding evasion

diff --git a/tests/smb-eicar-padding/README.md b/tests/smb-eicar-padding/README.md
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+# Description
+
+Test SMB EICAR file rule with padding evasion.
+
+# PCAP
+
+The pcap comes from running Linux client smbclient against a Windows 2019 Server (with a shared forlder public wihtout needed authentication)
+Command is
+`smbclient //192.168.1.3/public/ -U % -m NT1`
+Than in the smbclient shell :
+`put eicar` where eicar is the name of a file with the EICAR contents :
+https://en.wikipedia.org/wiki/EICAR_test_file
+
+The proxy changes the Write request with adding a dummy padding (by increasing unnecessarly the data_offset)

diff --git a/tests/smb-eicar-padding/smb1_eicar_andx_write_padding2.pcap b/tests/smb-eicar-padding/smb1_eicar_andx_write_padding2.pcap
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diff --git a/tests/smb-eicar-padding/test.rules b/tests/smb-eicar-padding/test.rules
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+alert smb any any -> any any (msg:"EICAR file"; flow:established; file_data; content:"|58354f2150254041505b345c505a58353428505e2937434329377d2445494341522d5354414e444152442d414e544956495255532d544553542d46494c452124482b482a|"; sid:1; rev:1;)

diff --git a/tests/smb-eicar-padding/test.yaml b/tests/smb-eicar-padding/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