Add rest_total_hits_as_int to allowed Uri Params

[alexander-schranz]

This allow to get in ES7 again to total as int instead of an object.

[codecov-commenter]

Codecov Report

Merging #324 into 7.2 will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##                7.2     #324   +/-   ##
=========================================
  Coverage     78.53%   78.53%           
  Complexity      713      713           
=========================================
  Files           123      123           
  Lines          1887     1887           
=========================================
  Hits           1482     1482           
  Misses          405      405           

Impacted Files	Coverage Δ	Complexity Δ
src/Search.php	21.91% <ø> (ø)	56.00 <0.00> (ø)

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