Fixing sentinel command response

[mahigupta]

Pull Request check-list

• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?
• Was the change added to CHANGES file?

Description of change

For #3139

• Made change to execute_command function to parse sentinel command response correctly and don't return by default True

[mahigupta]

@dvora-h Can you please take a look.

[mahigupta]

@vladvildanov Can you please take a look ?

[vladvildanov]

@mahigupta Thanks for your input! I'll also include @gerzse into this