refactor: Updated EKS integration to use integration_pattern (aws#177)

Author: ca-nguyen

doc/services.rst

@@ -42,7 +42,7 @@ Amazon EKS
 
 .. autoclass:: stepfunctions.steps.service.EksCreateFargateProfileStep
 
-.. autoclass:: stepfunctions.steps.service.EksCreateNodeGroupStep
+.. autoclass:: stepfunctions.steps.service.EksCreateNodegroupStep
 
 .. autoclass:: stepfunctions.steps.service.EksDeleteClusterStep
 

src/stepfunctions/steps/__init__.py

@@ -24,7 +24,7 @@
  EksCallStep,
  EksCreateClusterStep,
  EksCreateFargateProfileStep,
- EksCreateNodeGroupStep,
+ EksCreateNodegroupStep,
  EksDeleteClusterStep,
  EksDeleteFargateProfileStep,
  EksDeleteNodegroupStep,