Update pyOptSparseDriver to handle an API change in pyOptSparse in version 2.5.1

[hschilling]

Summary

There have been two changes to the pyOptSparse API recently.

• removed support for the "openmdao style" sensitivity dictionary, which is a tuple. Now the only supported way is to use a nested dict
• renamed the functions finalizeDesignVariables() and finalizeConstraints() and made them private (prepending with underscore). The preferred way now is to call finalize()

The first one doesn't affect OpenMDAO, as the code only used dicts, and not tuples, so no changes were needed.

The second one, which occurred in 2.5.1, requires detecting the version of pyOptSparse and calling the appropriate API call of pyOptSparse

Related Issues

• Resolves Update pyOptSparse wrapper for latest version #1990

Backwards incompatibilities

None

New Dependencies

None

[JustinSGray]

@nwu63 just FYI!

[ewu63]

Thanks for the work :)

[coveralls]

Coverage decreased (-0.4%) to 88.716% when pulling d10c49d on hschilling:I1990-update-pyoptsparse-wrapper into 02d084e on OpenMDAO:master.