Updating expeditor configuration

[jayashrig158]

Signed-off-by: jayashri garud jgarud@msystechnologies.com

Description

i) The merge_actions subscription shortcut has been deprecated. All subscriptions should be declared via the subscriptions block for clarity. ii) The promote block has been deprecated. All actions should be declared via the subscriptions block for clarity.

Issues Resolved

[List any existing issues this PR resolves, or any Discourse or StackOverflow discussions that are relevant]

Check List

• [ ] New functionality includes tests
• [ ] All tests pass
• [ ] All commits have been signed-off for the Developer Certificate of Origin. See https://github.com/chef/chef/blob/master/CONTRIBUTING.md#developer-certification-of-origin-dco
• [ ] PR title is a worthy inclusion in the CHANGELOG