Support for AWS China region

Context

Zappa currently doesn't support AWS China region. We would like to use it for AWS China region, especially for Ningxia Region. You could kindly refer to this issue: https://github.com/Miserlou/Zappa/issues/1564

Expected Behavior

Support for AWS China region.

Actual Behavior

Currently it doesn't support China region as arn format is different in AWS China region.

Possible Fix

Service availablity: Route53/ACM/Lambda EnvironmentVariablesFeature/Cloudfront are all available now in China region
As suggested in issue #1977 , need to fix core.py as partition in arn is "arn-cn" in China region.

Steps to Reproduce

Deploy zappa for China region

Your Environment

Zappa version used: 0.51.0
Operating System and Python version: MacOS, Python 3.8.5
The output of pip freeze: acme==1.7.0 appdirs==1.4.4 argcomplete==1.12.0 boto3==1.14.38 botocore==1.17.38 certbot==1.7.0 certbot-s3front==0.4.2 certifi==2020.6.20 cffi==1.14.1 cfn-flip==1.2.3 chardet==3.0.4 click==7.1.2 ConfigArgParse==1.2.3 configobj==5.0.6 cryptography==3.0 distlib==0.3.1 distro==1.5.0 docutils==0.15.2 durationpy==0.5 filelock==3.0.12 future==0.18.2 hjson==3.0.1 idna==2.10 Jinja2==2.11.2 jmespath==0.10.0 joblib==0.16.0 josepy==1.3.0 kappa==0.6.0 livereload==2.6.2 lunr==0.5.8 Markdown==3.2.2 MarkupSafe==1.1.1 mkdocs==1.1.2 mkdocs-material==5.5.3 mkdocs-material-extensions==1.0 mock==4.0.2 nltk==3.5 parsedatetime==2.6 pip-tools==5.3.1 placebo==0.9.0 pycparser==2.20 Pygments==2.6.1 pymdown-extensions==7.1 pyOpenSSL==19.1.0 pyRFC3339==1.1 python-dateutil==2.6.1 python-slugify==4.0.1 pytz==2020.1 PyYAML==5.3.1 regex==2020.7.14 requests==2.24.0 requests-toolbelt==0.9.1 s3transfer==0.3.3 six==1.15.0 text-unidecode==1.3 toml==0.10.1 tornado==6.0.4 tqdm==4.48.2 troposphere==2.6.2 urllib3==1.25.10 virtualenv==20.0.30 Werkzeug==0.16.1 wsgi-request-logger==0.4.6 zappa==0.51.0 zope.component==4.6.2 zope.deferredimport==4.3.1 zope.deprecation==4.4.0 zope.event==4.4 zope.hookable==5.0.1 zope.interface==5.1.0 zope.proxy==4.3.5
Your zappa_settings.json: { "dev": { "app_function": ".", "aws_region": "cn-north-1", "profile_name": "cnlab", "project_name": "zappa", "runtime": "python3.8", "s3_bucket": "zappa-a9i8ftiq0" } }

Miserlou / Zappa

Support for AWS China region #2150