Issue Summary

Pipelines fail to report indentation error in the "aws" section in bitbucket-pipelines.yml

Steps to Reproduce

1. Try editing bitbucket-pipelines.yml
2. Add:

image: 
   name: 034534534535.ecr.us-east-1.amazonaws.com/dev/ecr:v4 
aws: 
      access-key: $ECR_ACCESS_KEY 
      secret-key: $ECR_SECRET_KEY

1. No errors reported, this indeed fails the image pull with 403.

Expected Results

Bitbucket pipelines validator should catch this.

Actual Results

Bitbucket pipelines validator doesn't catch this, 

Correct YAML syntax as per official documentation:

image:
  name: <aws_account_id>.dkr.ecr.<region>.amazonaws.com/openjdk:8
  aws: 
    access-key: $AWS_ACCESS_KEY
    secret-key: $AWS_SECRET_KEY

Workaround

Referring to the documentation.