Update buildroot & docker (#25)

* Update docker & buildroot

* Fix

* fix versions

buildroot/support/testing/tests/package/test_python_cryptography.py

@@ -0,0 +1,34 @@
+from tests.package.test_python import TestPythonBase
+
+
+class TestPythonCryptography(TestPythonBase):
+    def fernet_test(self, timeout=-1):
+        cmd = self.interpreter + " -c 'from cryptography.fernet import Fernet;"
+        cmd += "key = Fernet.generate_key();"
+        cmd += "f = Fernet(key)'"
+        _, exit_code = self.emulator.run(cmd, timeout)
+        self.assertEqual(exit_code, 0)
+
+
+class TestPythonPy2Cryptography(TestPythonCryptography):
+    config = TestPythonBase.config + \
+        """
+        BR2_PACKAGE_PYTHON=y
+        BR2_PACKAGE_PYTHON_CRYPTOGRAPHY=y
+        """
+
+    def test_run(self):
+        self.login()
+        self.fernet_test(40)
+
+
+class TestPythonPy3Cryptography(TestPythonCryptography):
+    config = TestPythonBase.config + \
+        """
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_CRYPTOGRAPHY=y
+        """
+
+    def test_run(self):
+        self.login()
+        self.fernet_test(40)