Add Components#startup! hook #1151
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delner
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Some parts of
Datadog::Configuration::Componentsrequire startup (namely worker threads); this pull request adds aComponents#startup!method which defines this behavior. It also does some minor refactoring of how components are built/replaced in the configuration cycle (original behavior should be largely unaffected though.)This hook isn't employed in this PR but will become necessary for profiling and other auto-starting processes.