Output the expiration dates of the certs in bootstrap

bootstrap-decoder2.py

#!/usr/bin/python
import sys, json, base64
from cryptography import x509
from cryptography.hazmat.backends import default_backend

file_list = json.load(sys.stdin)['storage']['files']

#for files in file_list:
#  print files['path'] + "\n" + base64.b64decode(files['contents']['source'].split(',')[1])

for files in file_list:
  if files['path'][-4:] == '.crt':
    print files['path']
    certificate = base64.b64decode(files['contents']['source'].split(',')[1])
    cert = x509.load_pem_x509_certificate(certificate, default_backend())
    print cert.not_valid_before
    print cert.not_valid_after