smtp: add raw extraction test

diff --git a/tests/smtp-raw-extraction/README.md b/tests/smtp-raw-extraction/README.md
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+# SMTP raw extraction
+
+This test verifies that the flag app-layers.protocols.smtp.raw-extraction set to
+True will make suricata dump e-mails in raw form, including headers and e-mail
+content.
+
+The pcap file is downloaded from
+
+```
+https://osqa-ask.wireshark.org/questions/33094/extract-an-attachment-email-smtp-cap
+```

diff --git a/tests/smtp-raw-extraction/input.pcap b/tests/smtp-raw-extraction/input.pcap
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Binary files /dev/null and b/tests/smtp-raw-extraction/input.pcap differ

diff --git a/tests/smtp-raw-extraction/suricata.yaml b/tests/smtp-raw-extraction/suricata.yaml
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+%YAML 1.1
+---
+
+pcap-file:
+    checksum-checks: no
+
+# Configure the type of alert (and other) logging you would like.
+outputs:
+  - file-store:
+      version: 2
+      enabled: yes
+##
+## Step 5: App Layer Protocol Configuration
+##
+
+# Configure the app-layer parsers. The protocols section details each
+# protocol.
+#
+# The option "enabled" takes 3 values - "yes", "no", "detection-only".
+# "yes" enables both detection and the parser, "no" disables both, and
+# "detection-only" enables protocol detection only (parser disabled).
+app-layer:
+  protocols:
+    smtp:
+      enabled: yes
+      raw-extraction: yes
+      # Configure SMTP-MIME Decoder
+      mime:
+        # Decode MIME messages from SMTP transactions
+        # (may be resource intensive)
+        # This field supercedes all others because it turns the entire
+        # process on or off
+        decode-mime: no
+
+        # Decode MIME entity bodies (ie. base64, quoted-printable, etc.)
+        decode-base64: yes
+        decode-quoted-printable: yes
+
+        # Maximum bytes per header data value stored in the data structure
+        # (default is 2000)
+        header-value-depth: 2000
+
+        # Extract URLs and save in state data structure
+        extract-urls: no
+        # Set to yes to compute the md5 of the mail body. You will then
+        # be able to journalize it.
+        body-md5: no
+      # Configure inspected-tracker for file_data keyword
+      inspected-tracker:
+        content-limit: 100000
+        content-inspect-min-size: 32768
+        content-inspect-window: 4096

diff --git a/tests/smtp-raw-extraction/test.rules b/tests/smtp-raw-extraction/test.rules
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+alert smtp any any -> any any (msg:"SMTP file"; flow:established, to_server; file_data; content:"Content-Type: multipart/"; nocase; filestore; sid:1; rev:1;)

diff --git a/tests/smtp-raw-extraction/test.yaml b/tests/smtp-raw-extraction/test.yaml
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+requires:
+  min-version: 5.0.0
+  features:
+    - HAVE_NSS
+  files:
+    - src/output-filestore.c
+
+checks:
+
+  - shell:
+      args: test -e filestore/01/018e4f86e830d85dc21cb54ee6554f01ac0b2a73a24f83c64b6acb489e8f4f3d