This PR adds support for the systemd notify protocol. Several status messagess are provided. We should likely add a common notify/status message for graceful. Replaces #21140 Signed-off-by: Andrew Thornton <[email protected]> --------- Signed-off-by: Andrew Thornton <[email protected]> Co-authored-by: ltdk <[email protected]> Co-authored-by: Giteabot <[email protected]>
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