lambda + SNS enhancements (#1048)

* updates

- support lambda messages from SNS
- run lambda in docker container

* decode output

* populate timeout

* simplify

* whoops

* skeletons of cloudwatchlogs

* impl filter log streams

* fix logging

* PEP fixes

* PEP fixes

* fix reset

* fix reset

* add new endpoint

* fix region name

* add docker

* try to fix tests

* try to fix travis issue with boto

* fix escaping in urls

* fix environment variables

* fix PEP

* more pep

* switch back to precise

* another fix attempt

* fix typo

* fix lambda invoke

* fix more unittests

* work on getting this to work in new scheme

* fix py2

* fix error

* fix tests when running in server mode

* more lambda fixes

* try running with latest docker

adapted from aiodocker

* switch to docker python client

* pep fixes

* switch to docker volume

* fix unittest

* fix invoke from sns

* fix zip2tar

* add hack impl for get_function with zip

* try fix

* fix for py < 3.6

* add volume refcount

* try to fix travis

* docker test

* fix yaml

* try fix

* update endpoints

* fix

* another attempt

* try again

* fix recursive import

* refactor fix

* revert changes with better fix

* more reverts

* wait for service to come up

* add back detached mode

* sleep and add another exception type

* put this back for logging

* put back with note

* whoops :)

* docker in docker!

* fix invalid url

* hopefully last fix!

* fix lambda regions

* fix protocol

* travis!!!!

* just run lambda test for now

* use one print

* fix escaping

* another attempt

* yet another

* re-enable all tests

* fixes

* fix for py2

* revert change

* fix for py2.7

* fix output ordering

* remove this given there's a new unittest that covers it

* changes based on review

- add skeleton logs test file
- switch to docker image that matches test env
- fix mock_logs import

* add readme entry

setup.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 from __future__ import unicode_literals
+import setuptools
 from setuptools import setup, find_packages
+import sys
+
 
 install_requires = [
     "Jinja2>=2.8",
@@ -17,12 +20,21 @@ install_requires = [
     "pytz",
     "python-dateutil<3.0.0,>=2.1",
     "mock",
+    "docker>=2.5.1"
 ]
 
 extras_require = {
     'server': ['flask'],
 }
 
+# https://hynek.me/articles/conditional-python-dependencies/
+if int(setuptools.__version__.split(".", 1)[0]) < 18:
+    if sys.version_info[0:2] < (3, 3):
+        install_requires.append("backports.tempfile")
+else:
+    extras_require[":python_version<'3.3'"] = ["backports.tempfile"]
+
+
 setup(
     name='moto',
     version='1.1.19',
@@ -47,6 +59,9 @@ setup(
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
+        "Programming Language :: Python :: 3.6",
         "License :: OSI Approved :: Apache Software License",
         "Topic :: Software Development :: Testing",
     ],