support/testing: test_php_lua: fix flake8 error

support/testing/tests/package/test_php_lua.py:35:1: E302 expected 2 blank lines, found 1

Add the missing line before class definition.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

support/testing/tests/package/test_php_lua.py

@@ -32,6 +32,7 @@ class TestPhpLuaLua(infra.basetest.BRTest):
         # bumping package version.
         self.assertEqual(output[2][0:25], "lua extension version => ")
 
+
 class TestPhpLuaLuajit(infra.basetest.BRTest):
     config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
         """