Reliability of the nginx reload on deployment: right after the project's reverse proxy…

v0.6.1-alpha

Reliability of the nginx reload on deployment: right after the project's reverse proxy was (re)created, reloading the configuration could wrongly fail with a transient error ("procReady not received") because the container was not quite ready yet. The agent now briefly retries this step, while still failing immediately on a genuine configuration error. No effect on routing (the config is loaded at startup anyway), but it removes this false failure from the logs.