##### SUMMARY
The file contents that end up as the output of ecs_certificates "full_chain_path" are not a valid format for import into, for example, a PKCS12 store.

This is the result of the return value of the ECS API being an array, and not properly turning that array into concatenated certificates for the resulting PEM file.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
ecs_certificate

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
Applies to ansible 2.9.0.dev0

##### CONFIGURATION
N/A affects all configurations

##### OS / ENVIRONMENT
N/A affects all OS/environment


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
Populate full_chain_path and inspect output

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
A properly formatted PEM certificate chain

##### ACTUAL RESULTS
A certificate chain in format ['CERT','CERT']

type: str
        required: true
    requester_phone:
        description: Requester phone number to associate with certificate tracking information.
        type: str
        required: true
    additional_emails:
        description: A list of additional email addresses to receive the delivery notice and expiry notification for the certificate.
        type: list
    custom_fields:
        description:
            - Mapping of custom fields to associate with the certificate request and certificate.
            - Only supported if custom fields are enabled for your account.
            - Each custom field specified must be a custom field you have defined for your account.
        type: dict
        suboptions:
            text1:
                description: Custom text field of maximum size 500.
                type: str
            text2:
                description: Custom text field of maximum size 500.
                type: str
            text3:
                description: Custom text field of maximum size 500.
                type: str
            text4:
                description: Custom text field of maximum size 500.
                type: str
            text5:
                description: Custom text field of maximum size 500.