Fix to allow the specification of different number of iterations for different variable

Issue/feature addressed

In the NekLinSysIter.cpp class and subclasses, if GlobalSysSolnInfo is use to specify different parameters for different variable, only the parameters corresponding to the first variables blocks are used to initialize the object in the constructor.

Proposed solution

Pass as an argument parameter a string containing the variable name in the constructors of NekLinSysIter.cpp class and subclasses.

Implementation

Tests

The following test has been updated to test the possibility to use different maximum iteration number for different variables solvers/IncNavierStokesSolver/Tests/KovaFlow_m10_taylorHood_VCSImplicitLoc.xml

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Notes

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Checklist

• Functions and classes, or changes to them, are documented.
• [ ] User guide/documentation is updated.
• Changelog is updated.
• Suitable tests added for new functionality.
• Contributed code is correctly formatted. (See the contributing guidelines).
• [ ] License added to any new files.
• No extraneous files have been added (e.g. compiler output or test data files).