[API] Test Runner: Updates compare_string for big number tests

Author: picandocodigo

elasticsearch-api/api-spec-testing/rspec_matchers.rb

@@ -245,7 +245,7 @@ def compare_string(expected, actual_value, test, response)
       # When the value in the yaml test is a big number, the format is
       # different from what Ruby uses, so we transform  X.XXXXEXX to X.XXXXXe+XX
       # to be able to compare the values
-      actual_value.to_s == expected.gsub('E', 'e+')
+      actual_value.to_s == expected.gsub('E', 'e+') || actual_value == expected
     elsif expected == '' && actual_value != ''
       actual_value == response
     else