Debugger: Pass the object to filter to allow easier addition of tests.

[kraftbj]

Enables an easier time to add tests by doing

add_action( 'jetpack_connection_tests_loaded', 'example', 10, 2);

function example( $obj ) {
$obj->add_test(...);
}

Changes proposed in this Pull Request:

• Passes $this to filters.

Is this a new feature or does it add/remove features to an existing part of Jetpack?

• n/a

Testing instructions:

• @dereksmart tested this live.

Proposed changelog entry for your changes:

• Debugger: Improve ability to add additional tests.

[jetpackbot]

	Warnings
⚠️	The PR is missing at least one [Status] label. Suggestions: [Status] In Progress, [Status] Needs Review

This is an automated check which relies on PULL_REQUEST_TEMPLATE. We encourage you to follow that template as it helps Jetpack maintainers do their job. If you think 'Testing instructions' or 'Proposed changelog entry' are not needed for your PR - please explain why you think so. Thanks for cooperation 🤖

Generated by 🚫 dangerJS against e302e17

[dereksmart]

Works wonders