Improve sensitivity analysis run parameters

[alicecaron]

Describe the current behavior

To run a sensitivity analysis on a Network, a lot of parameters must be set.

Describe the expected behavior

To run a sensitivity analysis on a Network, we can precise the network, sensitivity factors and only the wanted parameters to override (none if need be).

Describe the motivation

For some use cases the use of SensitivityAnalysis::run does not need a lot of parameters. The mandatory parameters should always be the Network on which the analysis is wanted and a list of SensitivityFactor.
The other parameters could be set by default and overridden only if needed:

• variant: VariantManagerConstants.INITIAL_VARIANT_ID
• List of SensitivityVariableSet : empty list
• List of Contingency: empty list
• parameters of the SensitivityAnalysis: SensitivityAnalysisParameters.load()
• computation manager: LocalComputationManager.getDefault()
• report node: ReportNode.NO_OP

For that, we can create for instance an SensitivityAnalysis inner class Runner that sets all the parameters by default and allows them to be overridden, like this following example:

SensitivityAnalysis.newRunner(network, sensitivityFactors)
    .setComputationManager(manager)
    .setReportNode(report)
    .run();

Extra Information

We keep all the current SensitivityAnalysis::run methods for simple cases.