Bug 1649075

## Bug:

**What happened**:
If you follow https://github.com/openshift/ansible-service-broker/blob/master/docs/secrets.md and try to add a multiline secret as in:
```
---
apiVersion: v1
kind: Secret
metadata:
    name: test
    namespace: openshift-automation-service-broker
stringData:
    "test1": "test1"
    "test2": "test2"
    "test_multiline": |-
      -----BEGIN RSA PRIVATE KEY-----
      <FIRST LINE OF THE SSH KEY>
      <SECOND LINE OF THE SSH KEY>
```
the Ansible Playbook Bundle will see an error while loading the secrets YAML file, as if it was using newlines to separate secrets:
```
ERROR! Syntax Error while loading YAML.
  could not find expected ':'
The error appears to have been in '/tmp/secrets': line 6, column 1, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
<FIRST LINE OF THE SSH KEY>
<SECOND LINE OF THE SSH KEY>
^ here
```
This happens as well if you use the base64 data secret.

**What you expected to happen**:

The secret should keep the newlines and be used as a parameter on the APB.