Replaces executor with adapter in places we missed

[skrawcz]

We missed a few spots. This changes executor to adapter
to be inline with the terminology that we want to use
in the code base.

Changes

• replaces executor with adapter in places we missed.

Testing

1. unit testing FTW

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows the standards laid out in the TODO link to standards
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• Reviewers requested with the Reviewers tool ➡️

Testing checklist

Python

• python 3.6
• python 3.7