Add other ways to specify Conjur / DAP identity in cyberark.conjur.conjur_variable

[sgnn7]

Is your feature request related to a problem? Please describe.

Currently there are only 2 ways to specify identity for the use of cyberark.conjur.conjur_variable:

• Configuration files on the target
• Environment variables on the host running the playbook

This should be extended to possibly handle:

• Env vars on the target machine process
• Identity information within the cyberark.conjur.conjur_variable() kwargs argument

Describe the solution you would like

AC:

• Env vars on the target machine can be used to provide Conjur / DAP identity
• kwargs for cyberark.conjur.conjur_variable() can be used to provide Conjur / DAP identity

Describe alternatives you have considered

N/A

Additional context

N/A

CC: @infamousjoeg