Add missing configuration for scheduler

[upgle]

Description

The configuration for running the scheduler is missing, so I added the configuration.

Related issue and scope

• I opened an issue to propose and discuss this change (#????)

My changes affect the following components

• API
• Controller
• Message Bus (e.g., Kafka)
• Loadbalancer
• Scheduler
• Invoker
• Intrinsic actions (e.g., sequences, conductors)
• Data stores (e.g., CouchDB)
• Tests
• Deployment
• CLI
• General tooling
• Documentation

Types of changes

• Bug fix (generally a non-breaking change which closes an issue).
• Enhancement or new feature (adds new functionality).
• Breaking change (a bug fix or enhancement which changes existing behavior).

Checklist:

• I signed an Apache CLA.
• I reviewed the style guides and followed the recommendations (Travis CI will check :).
• I added tests to cover my changes.
• My changes require further changes to the documentation.
• I updated the documentation where necessary.

[codecov-commenter]

Codecov Report

Merging #5235 (1d27143) into master (37f1f99) will increase coverage by 46.92%.
The diff coverage is 80.00%.

@@             Coverage Diff             @@
##           master    #5235       +/-   ##
===========================================
+ Coverage   26.29%   73.22%   +46.92%     
===========================================
  Files         238      238               
  Lines       13965    13964        -1     
  Branches      576      571        -5     
===========================================
+ Hits         3672    10225     +6553     
+ Misses      10293     3739     -6554     

Impacted Files	Coverage Δ
...apache/openwhisk/connector/lean/LeanProducer.scala	0.00% <0.00%> (ø)
.../org/apache/openwhisk/core/connector/Message.scala	76.28% <ø> (+34.02%)	⬆️
...enwhisk/core/loadBalancer/InvokerSupervision.scala	90.27% <0.00%> (+90.27%)	⬆️
...e/loadBalancer/ShardingContainerPoolBalancer.scala	78.53% <ø> (+78.53%)	⬆️
...ontainerpool/v2/FunctionPullingContainerPool.scala	80.32% <ø> (+80.32%)	⬆️
...nwhisk/core/invoker/ContainerMessageConsumer.scala	78.72% <ø> (+78.72%)	⬆️
...he/openwhisk/core/invoker/FPCInvokerReactive.scala	0.00% <ø> (ø)
...whisk/connector/kafka/KafkaProducerConnector.scala	80.48% <100.00%> (+20.48%)	⬆️
...enwhisk/core/loadBalancer/CommonLoadBalancer.scala	71.42% <100.00%> (+71.42%)	⬆️
.../openwhisk/core/loadBalancer/FPCPoolBalancer.scala	33.73% <100.00%> (+33.73%)	⬆️
... and 166 more

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