docs: def create_container_service(access_token, subscription_id, resource_group, service_name, \
      agent_count, agent_vm_size, agent_dns, master_dns, admin_user, location, public_key=None,\
      master_count=3, orchestrator='DCOS', app_id=None, app_secret=None, admin_password=None, \
      ostype='Linux'):
      '''Create a new container service - include app_id and app_secret if using Kubernetes.
  
      Args:
          access_token (str): A valid Azure authentication token.
          subscription_id (str): Azure subscription id.
          resource_group (str): Azure resource group name.
          service_name (str): Name of container service.
          agent_count (int): The number of agent VMs.
          agent_vm_size (str): VM size of agents, e.g. Standard_D1_v2.
          agent_dns (str): A unique DNS string for the agent DNS.
          master_dns (str): A unique string for the master DNS.
          admin_user (str): Admin user name.
          location (str): Azure data center location, e.g. westus.
          public_key (str): RSA public key (utf-8).
          master_count (int): Number of master VMs.
          orchestrator (str): Container orchestrator. E.g. DCOS, Kubernetes.
          app_id (str): Application ID for Kubernetes.
          app_secret (str): Application secret for Kubernetes.
          admin_password (str): Admin user password.
          ostype (str): Operating system. Windows of Linux.
  
      Returns:
          HTTP response. Container service JSON model.
      '''
      endpoint = ''.join([get_rm_endpoint(),
                          '/subscriptions/', subscription_id,
                          '/resourcegroups/', resource_group,
                          '/providers/Microsoft.ContainerService/ContainerServices/', service_name,
                          '?api-version=', ACS_API])
      acs_body = {'location': location}
      properties = {'orchestratorProfile': {'orchestratorType': orchestrator}}
      properties['masterProfile'] = {'count': master_count, 'dnsPrefix': master_dns}
      ap_profile = {'name': 'AgentPool1'}
      ap_profile['count'] = agent_count
      ap_profile['vmSize'] = agent_vm_size
      ap_profile['dnsPrefix'] = agent_dns
      properties['agentPoolProfiles'] = [ap_profile]
      if ostype == 'Linux':
          linux_profile = {'adminUsername': admin_user}
          linux_profile['ssh'] = {'publicKeys': [{'keyData': public_key}]}
          properties['linuxProfile'] = linux_profile
      else: # Windows
          windows_profile = {'adminUsername': admin_user, 'adminPassword': admin_password}
          properties['windowsProfile'] = windows_profile
      if orchestrator == 'Kubernetes':
          sp_profile = {'ClientID': app_id}
          sp_profile['Secret'] = app_secret
          properties['servicePrincipalProfile'] = sp_profile
      acs_body['properties'] = properties
      body = json.dumps(acs_body)
      return do_put(endpoint, body, access_token)