fix: use correct retry deadline in publisher methods

[plamut]

Fixes #794.

This PR makes sure that correct Retry deadline is used in publisher methods. Should fix googleapis/python-pubsub#303 when the Python PubSub code is re-generated.

[codecov]

Codecov Report

Merging #814 (1302d6a) into master (7c185e8) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #814   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           26        27    +1     
  Lines         1608      1653   +45     
  Branches       328       337    +9     
=========================================
+ Hits          1608      1653   +45     

Impacted Files	Coverage Δ
gapic/utils/case.py	100.00% <ø> (ø)
gapic/utils/reserved_names.py	100.00% <ø> (ø)
gapic/generator/generator.py	100.00% <100.00%> (ø)
gapic/schema/api.py	100.00% <100.00%> (ø)
gapic/schema/wrappers.py	100.00% <100.00%> (ø)
gapic/utils/__init__.py	100.00% <100.00%> (ø)
gapic/utils/checks.py	100.00% <100.00%> (ø)
gapic/utils/options.py	100.00% <100.00%> (ø)

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[software-dov]

Thanks! Can you add the same change to the ads template?

[plamut]

Done, and the same for the async client template, PTAL.

BTW, for future reference, what are ads-templates anyway?

[software-dov]

For really frustrating, annoying reasons, the Ads team has special requirements for their GAPIC; the easiest solution is to just have a separate, mostly identical set of templates for them.

The big difference that they required has to do with multiple version subdirectories.
The regular templates make a directory something like:
google/cloud/kms_v1/

ads wants something like:
google/ads/googleads/v6

It also makes it easier to support their lazy load feature, which requires python 3.7, but the other gapics must support 3.6.