old_contents: import jinja2
  import os
  import sys
  from subprocess import call
  
  pcfkeypairprivate = os.environ['AWS_CF_PCFKEYPAIRPRIVATE'],
  password = os.environ['AWS_CF_PASSWORD'],
  domain = os.environ['AWS_CF_DOMAIN'],
  hostedzoneid = os.environ['AWS_CF_HOSTEDZONEID'],
  sslcertificatearn = os.environ['AWS_CF_SSLCERTIFICATEARN'],
  natkeypair = os.environ['AWS_CF_NATKEYPAIR'],
  pivnettoken = os.environ['AWS_CF_PIVNETTOKEN'],
  
  with open('ci/parameters.j2.json', 'r') as template_file:
      template = template_file.read()
      rendered = jinja2.Template(template).render(
          pcfkeypairprivate='{{aws_cf_pcfkeypairprivate}}',
          password='{{aws_cf_password}}',
          domain='{{aws_cf_domain}}',
          hostedzoneid='{{aws_cf_hostedzoneid}}',
          sslcertificatearn='{{aws_cf_sslcertificatearn}}',
          natkeypair='{{aws_cf_natkeypair}}',
          pivnettoken='{{aws_cf_pivnettoken}}'
      )
  
      print("---------------------------")
      print(rendered)
      print("---------------------------")
  
      with open('parameters.json', 'w') as rendered_file:
          rendered_file.write(rendered)
  
      cmd = """
      aws cloudformation create-stack \
                --stack-name pcf-int-`date +%s` \
                --capabilities CAPABILITY_IAM \
                --template-body file:///`pwd`/cloudformation/quickstart-template.yml \
                --parameters file:///`pwd`/parameters.json
   """
  
      sys.exit(call(cmd, shell=True))
  
new_contents: import jinja2
  import os
  import sys
  from subprocess import call
  
  pcfkeypairprivate = os.environ['AWS_CF_PCFKEYPAIRPRIVATE'],
  password = os.environ['AWS_CF_PASSWORD'],
  domain = os.environ['AWS_CF_DOMAIN'],
  hostedzoneid = os.environ['AWS_CF_HOSTEDZONEID'],
  sslcertificatearn = os.environ['AWS_CF_SSLCERTIFICATEARN'],
  natkeypair = os.environ['AWS_CF_NATKEYPAIR'],
  pivnettoken = os.environ['AWS_CF_PIVNETTOKEN'],
  
  with open('ci/parameters.j2.json', 'r') as template_file:
      template = template_file.read()
      rendered = jinja2.Template(template).render({
          "pcfkeypairprivate": pcfkeypairprivate,
          "password": password,
          "domain": domain,
          "hostedzoneid": hostedzoneid,
          "sslcertificatearn": sslcertificatearn,
          "natkeypair": natkeypair,
          "pivnettoken": pivnettoken
      })
  
      print("---------------------------")
      print(rendered)
      print("---------------------------")
  
      with open('parameters.json', 'w') as rendered_file:
          rendered_file.write(rendered)
  
      cmd = """
      aws cloudformation create-stack \
                --stack-name pcf-int-`date +%s` \
                --capabilities CAPABILITY_IAM \
                --template-body file:///`pwd`/cloudformation/quickstart-template.yml \
                --parameters file:///`pwd`/parameters.json
   """
  
      sys.exit(call(cmd, shell=True))
  
subject: add new parameter code