* Wrap connection attempt by try/except block so an individual downed doorbird does not fail the whole platform
* Fixed lint warning
* Disable too-broad-exception pylint warning since the whole point of this is to catch all exceptions and log them while letting processing continue; I don't disable a lint warning lightly, but this is the entire intent of this PR.
* Fixed name of pylint warning to broad-except
* Use _LOGGER.exception to get the stack trace too, per PEP8 recommendation for a bare Exception being caught.
* per @balloob, switch to just catching OSError on a narrow block; I'm not sure this protects all problems with Doorbird device startup, but it protects against the primary one I experience.
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