salt-cloud prints minions private key to output

Description of Issue

We are running salt-cloud commands from an Orchestration via Jenkins, and saw the minions private key being printed out to the logs.
I'd rather not see this in the output!

Example output from the cloud.create command:

    "__id__": "salt-cloud-create",
    "__run_num__": 1,
    "__sls__": "orch.aws.provision-host",
    "changes": {
        "ret": {
            "instance-hostname.com-create-runner": {
                "instance-hostname.com": {
                    "deploy_kwargs": {
                        "name": "instance-hostname.com",
                        "vm_": {
                            ........
                            "priv_key": "-----BEGIN RSA PRIVATE KEY-----\n entire private key contents here",
                            .........
                        }
                    }
                }
            }
        }
    }

Setup

(Please provide relevant configs and/or SLS files (Be sure to remove sensitive info).)
Example SLS file

salt-cloud-create:
  salt.parallel_runners:
  - runners:
      instance-cloud-create-runner-1:
      - name: cloud.create
      - kwarg:
          instances:
          - instance.cloud
          provider: ec2-provider
          availability_zone: eu-central-1b
          image: ami-04cf43aca3e6f3de3
          size: t3.small
          rename_on_destroy: true
          ssh_username: centos

Steps to Reproduce Issue

(Include debug logs if possible and relevant.)
Run the following example sls file.

Versions Report

(Provided by running salt --versions-report. Please also mention any differences in master/minion versions.)

> salt-cloud -V
Salt Version:
            Salt: 2019.2.0

Dependency Versions:
 Apache Libcloud: 2.2.1
            cffi: 1.6.0
        cherrypy: 5.6.0
        dateutil: 2.6.1
       docker-py: Not Installed
           gitdb: 0.6.4
       gitpython: 1.0.1
           ioflo: Not Installed
          Jinja2: 2.7.2
         libgit2: 0.26.3
         libnacl: Not Installed
        M2Crypto: 0.31.0
            Mako: Not Installed
    msgpack-pure: Not Installed
  msgpack-python: 0.5.6
    mysql-python: Not Installed
       pycparser: 2.14
        pycrypto: 2.6.1
    pycryptodome: Not Installed
          pygit2: 0.26.4
          Python: 2.7.5 (default, Jun 20 2019, 20:27:34)
    python-gnupg: Not Installed
          PyYAML: 3.11
           PyZMQ: 15.3.0
            RAET: Not Installed
           smmap: 0.9.0
         timelib: Not Installed
         Tornado: 4.2.1
             ZMQ: 4.1.4

System Versions:
            dist: centos 7.6.1810 Core
          locale: ANSI_X3.4-1968
         machine: x86_64
         release: 3.10.0-957.21.3.el7.x86_64
          system: Linux
         version: CentOS Linux 7.6.1810 Core