fix: replace all retry configs removed during GAPIC config migration

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[codecov]

Codecov Report

Merging #165 into master will not change coverage.
The diff coverage is 83.68%.

@@            Coverage Diff            @@
##             master     #165   +/-   ##
=========================================
  Coverage     71.41%   71.41%           
  Complexity      190      190           
=========================================
  Files             6        6           
  Lines          1847     1847           
  Branches          6        6           
=========================================
  Hits           1319     1319           
  Misses          489      489           
  Partials         39       39           

Impacted Files	Coverage Δ	Complexity Δ
...java/com/google/cloud/dlp/v2/DlpServiceClient.java	47.36% <ø> (ø)	103.00 <0.00> (ø)
...va/com/google/cloud/dlp/v2/DlpServiceSettings.java	7.52% <0.00%> (ø)	2.00 <0.00> (ø)
...a/com/google/cloud/dlp/v2/stub/DlpServiceStub.java	2.56% <0.00%> (ø)	1.00 <0.00> (ø)
...ogle/cloud/dlp/v2/stub/DlpServiceStubSettings.java	82.95% <82.79%> (ø)	42.00 <8.00> (ø)
...m/google/cloud/dlp/v2/stub/GrpcDlpServiceStub.java	98.06% <99.37%> (ø)	39.00 <12.00> (ø)

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[noahdietz]

I diff'd the DlpServiceStubSettings.java changes in this PR against that of the commit preceding the offending commit and there is virtually no difference (just a one line comment change). Thus this should restore the retry settings properly.

The remaining diffs I believe are just from reordering of the generated code (gapic config order vs. proto order) and binary compatibility passes.