[API] Updated the YAML integration test suite runner to support open …

…ranges

Due to the change in elastic/elasticsearch@68f75ea, the normalized minimum and maximum versions
no longer matched the assumptions about the version definition in the `skip` statement.

The condition has been updated to check for empty `min` and `max` (non-normalized) versions.

Related: elastic/elasticsearch#10656

elasticsearch-api/test/integration/yaml_test_runner.rb

@@ -238,7 +238,7 @@ def skip?(actions)
 
           es_normalized  = sprintf "%03d-%03d-%03d", *$es_version.split('.').map(&:to_i)
 
-          if min_normalized <= es_normalized && max_normalized >= es_normalized
+          if ( min.empty? || min_normalized <= es_normalized ) && ( max.empty? || max_normalized >= es_normalized )
             return skip['skip']['reason'] ? skip['skip']['reason'] : true
           end