allow sampling_rules_poller to persist in event of an error

Author: jj22ee

sampler/xray/lib/opentelemetry/sampler/xray/aws_xray_remote_sampler.rb

@@ -121,6 +121,8 @@ def retrieve_and_update_sampling_rules
           else
             OpenTelemetry.logger.error('GetSamplingRules Response is falsy')
           end
+        rescue StandardError => e
+          OpenTelemetry.logger.error("Error occurred when retrieving or updating Sampling Rules: #{e}")
         end
 
         def update_sampling_rules(response_object)