Test graylog_role

[suzuki-shunsuke]

BREAKING CHANGE

Change the default value of terraform-provider-graylog's GRAYLOG_X_REQUESTED_BY from terraform-go-graylog to terraform-provider-graylog

For almost users this change has no problem.

[codecov]

Codecov Report

Merging #219 into master will increase coverage by 30.5%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #219      +/-   ##
==========================================
+ Coverage   19.14%   49.64%   +30.5%     
==========================================
  Files         125      125              
  Lines        5956     5962       +6     
==========================================
+ Hits         1140     2960    +1820     
+ Misses       4738     2908    -1830     
- Partials       78       94      +16

Impacted Files	Coverage Δ
terraform/graylog/util.go	44.92% <100%> (+44.92%)	⬆️
terraform/graylog/provider.go	97.26% <100%> (+97.26%)	⬆️
terraform/graylog/resource_event_definition.go	7.62% <0%> (+7.62%)	⬆️
terraform/graylog/resource_input_static_fields.go	20.9% <0%> (+20.9%)	⬆️
terraform/graylog/resource_stream_output.go	26.58% <0%> (+26.58%)	⬆️
terraform/graylog/resource_pipeline_connection.go	29.57% <0%> (+29.57%)	⬆️
terraform/graylog/resource_event_notification.go	29.62% <0%> (+29.62%)	⬆️
terraform/graylog/resource_output.go	29.62% <0%> (+29.62%)	⬆️
terraform/graylog/resource_pipeline.go	30.15% <0%> (+30.15%)	⬆️
terraform/graylog/resource_pipeline_rule.go	30.15% <0%> (+30.15%)	⬆️
... and 20 more

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