Fix python interpreter key

[minwhoo]

Fix python interpreter key.

ansible.cfg should use interpreter_python as documented in https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html

[ajdecon]

@minwhoo This looks reasonable to me!

Can you please sign-off on your commit to agree to our Developer Certificate of Origin, as documented in our CONTRIBUTING.md document? This will allow us to accept your PR.

You can do this in your existing PR by running the following in your local DeepOps clone with the branch for this PR:

# Check out branch for this PR
$ git checkout patch-1

# Amend your previous commit to sign off
$ git commit --amend --signoff

# Force-push the branch to update the PR
$ git push --force

[minwhoo]

No problem. Done!

[ajdecon]

LGTM