This is a Bug Report

Description

• What went wrong?
  I have around 40 lambda functions in my serverless file. When I do serverless deploy without a VPC configuration, it deploys fine.

However, when I add a VPC configuration like this:

vpc:
  securityGroupIds:
    - ***
  subnetIds:
    - ***

I have a few of the functions create and then the CF deployment fails because of the following error:

  Serverless Error ---------------------------------------
 
     An error occurred while provisioning your stack: MyLambdaFunction
     - Your request has been throttled by EC2, please make
     sure you have enough API rate limit. EC2 Error Code:
     RequestLimitExceeded. EC2 Error Message: Request limit
     exceeded..
 
  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
 
  Your Environment Information -----------------------------
     OS:                 darwin
     Node Version:       7.6.0
     Serverless Version: 1.8.0

After filing an AWS support request, this error appears because there is a hard limit on the create function. This can be solved in one of two ways:

• Split the serverless.yaml file into smaller pieces.
• Add the DependsOn parameter to each lambda function.

Personally I like the 2nd option because I won't need to modify my existing serverless.yaml file. However, I could not find anything in the Serverless documentation or the Github issues list that indicates there is an optional DependsOn property for lambda functions, so that I can delay the creation of a lambda function until another one has finished creating.

If this exists, can you let me know how it works? If it does not exist, is there is a package or a feature proposal for this?

Thanks so much!