new_contents: from cloudstack.cloudstack_client import CloudStackProvider
  from cloudstack.models import PlanAttr
  from pre_provisioned.pre_provisioned_client import  PreProvisionedProvider
  import logging
  
  LOG = logging.getLogger(__name__)
  
  class IaaSManager():
      
      def __init__(self, plan, environment):
          LOG.info("IaaS manager initialized...")
          self.plan = plan
          self.environment = plan
  
          if PlanAttr.objects.filter(plan=self.plan):
              self.create_cloud_stack_instance()
          else:
          	self.create_pre_provisioned_instance()
  
      def create_cloud_stack_instance(self):
          LOG.info("Creating cloud stack instance...")
          self.instance = CloudStackProvider().create_instance(self.plan, self.environment)
  
      def create_pre_provisioned_instance(self):
          LOG.info("Creating pre provisioned instance...")
          self.instance =  PreProvisionedProvider().create_instance(self.plan, self.environment)
  
  
subject: Add iaas manager and also some logic to choose the provider