Set default publisher retry and deadline settings to be consistent with desired values

[plamut]

Similar to the java-pubsub PR, the current default retry and timeout settings for publisher methods should be adjusted.

The methods are wrapped in the base publisher transport. It's a generated part of the library, and the generator uses these settings.

It appears that the settings are consistent with the values shared in internal docs, except for the "total timeout", which is the retry deadline, i.e. "how long to keep retrying in seconds".

[plamut]

It appears that in the generator template the same setting value (service.method) is used for the timeout and the retry deadline. We might be better off by just overriding the deadline with a replacement rule in the short term.