Validator: check same round for retry

[bbroder-algo]

Summary

Incorporate the new round data from the algod/indexer endpoint into validator retry check.

[codecov[bot]]

Codecov Report

Merging #1564 (cdba055) into develop (a1b2e3e) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1564   +/-   ##
========================================
  Coverage    68.58%   68.58%           
========================================
  Files           37       37           
  Lines         7417     7417           
========================================
  Hits          5087     5087           
  Misses        1903     1903           
  Partials       427      427           

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