initial load of evaluationModels is executed twice

[jangalinski]

Although #52 is fixed, I noticed something suspecious:

2020-10-08 18:07:33.445  INFO 33327 --- [aTaskExecutor-2] DmnDiagramEvaluationModelCacheJobHandler : saved evaluationModel: DmnDiagramEvaluationModel(diagramId=my-single-diagram, name=My Single Diagram, resourceName=diagram-my-single-diagram.dmn, deploymentId=ea3f842a-0965-11eb-b923-acde48001122, deploymentTime=Thu Oct 08 14:58:09 CEST 2020, decisionDefinitionId=single_1:1:ea48abef-0965-11eb-b923-acde48001122, inputs=[IntegerInputDefinition(key=customerAge, label=customerAge)], outputs=[StringOutputDefinition(key=reasons, label=reasons)], resultType=SINGLE)
2020-10-08 18:07:33.509  INFO 33327 --- [aTaskExecutor-3] DmnDiagramEvaluationModelCacheJobHandler : saved evaluationModel: DmnDiagramEvaluationModel(diagramId=my-single-diagram, name=My Single Diagram, resourceName=diagram-my-single-diagram.dmn, deploymentId=ea3f842a-0965-11eb-b923-acde48001122, deploymentTime=Thu Oct 08 14:58:09 CEST 2020, decisionDefinitionId=single_1:1:ea48abef-0965-11eb-b923-acde48001122, inputs=[IntegerInputDefinition(key=customerAge, label=customerAge)], outputs=[StringOutputDefinition(key=reasons, label=reasons)], resultType=SINGLE)

This is clearly an unnecessary duplicate execution and we should try to get rid of it.