Update CI pipelines to run when changes are made to templates

Problem Statement

Today, if we make any changes to an azure pipeline CI template file, the CI pipelines that consume the template do not run; because of this, there is no validation that a change made to the templates didn't break the CI pipelines that use it.

The purpose of this story is to update our azure CI pipeline files so that those pipelines run on template changes to validate that the template changes did not break anything.

A clear example of this is our extension pipelines. We have a template that is used by all of the extension CI pipelines e.g. the Cosmos DB CI file. When we make changes to the extensions-ci.yml file, the cosmos DB extension CI pipeline should run to validate the changes are not breaking.

Tasks

• Update our azure CI pipelines and/or template files so that a template change triggers a pipeline run for any pipeline that consumes the template

Definition of done

• When an azure CI template file is changed, any CI pipelines using that template should be triggered as part of the PR

Start with build/pipelines/templates/extensions-ci.yml and the consuming extensions/Worker.Extensions.CosmosDB/ci.yml file. Inspect how Azure pipeline triggers and template relationships are configured, then review the other consuming pipelines. Done means changing an Azure CI template triggers every pipeline that uses it, including the Cosmos DB extension pipeline, as stated in the definition of done.