Adds support to Python scripts on ModSecurity core.

Analog of what we have for Lua, Python support is now added by this commit.
This is very experimental.

tests/regression/nginx/conf/script.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from modsecurity import ModSecurity
+
+class ModSecurityExtension(ModSecurity):
+  def process(self):
+    self.log(8, "Python test message.")
+    return False
+
+if __name__ == "__main__":
+  myExtension = ModSecurityExtension()
+
+  # Process the content.
+  ret = myExtension.process()
+
+  if ret == True:
+    print("Matched!")
+  else:
+    print("_not_ matched")
+

tests/regression/rule/01-python-script.t

@@ -0,0 +1,24 @@
+### Test for SecRuleScript
+
+# Python
+{
+	type => "rule",
+	comment => "SecRuleScript (Python match)",
+	conf => qq(
+		SecRuleEngine On
+		SecDebugLog $ENV{DEBUG_LOG}
+		SecDebugLogLevel 9
+		SecRuleScript "script.py" "phase:2,deny"
+	),
+	match_log => {
+		-error => [ qr/Python script matched\./, 1 ],
+		debug => [ qr/Python test message\./, 1 ],
+	},
+	match_response => {
+		status => qr/^200$/,
+	},
+	request => new HTTP::Request(
+		GET => "http://$ENV{SERVER_NAME}:$ENV{SERVER_PORT}/test.txt?foo=bar&foo2=bar2",
+	),
+}
+

tests/regression/server_root/conf/script.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from modsecurity import ModSecurity
+
+class ModSecurityExtension(ModSecurity):
+  def process(self):
+    self.log(8, "Python test message.")
+    return False
+
+if __name__ == "__main__":
+  myExtension = ModSecurityExtension()
+
+  # Process the content.
+  ret = myExtension.process()
+
+  if ret == True:
+    print("Matched!")
+  else:
+    print("_not_ matched")
+