WHAT
In cloud-resource-operator, the function isSTSCluster is being called multiple times whereas its value can be incorporated into the NetworkProvider struct which will result in more readable code and improved performance.

HOW
Add a property IsSTSCluster bool to the NetworkProvider struct in cloud-resource-operator.

TESTS
Update unit tests if required.

DONE
The new IsSTSCluster struct property replaces the need to call func isSTSCluster multiple times.