This change adds a Fixture class for use by gradle. A Fixture is an
external process that integration tests will use. It can be added as a
dependsOn for integTest, and will automatically be shutdown upon success
or failure, as well as relevant information dumped on failure. There is
also an example fixture in this change.
This change attempts to simplify the gradle tasks for precommit. One
major part of that is using a "less groovy style", as well as being more
consistent about how tasks are created and where they are configured. It
also allows the things creating the tasks to set up inter task
dependencies, instead of assuming them (ie decoupling from tasks
eleswhere in the build).
The plugin name currently defaults to the gradle project name. But the
gradle project name for standalone repo (like an external plugin would
be) defaults to the directory name of the repo. This is trappy, since it
depends on how the repo was checked out.
This change enforces the plugin name is always set.
closes#14603