MPhys wrapper: Standardize ADflow wrapper

[anilyil]

Description of feature

The addition of flight conditions with the adflow wrapper should be standardized so that we can use the common naming convention with other aero solvers. currently, adflow still uses aeroproblems during configure and this requires extra manual connections.

Also with these changes, we can clean up the wrapper a bit and remove the unnecessary methods that were called in configure.

This only applies to the MPhys wrapper which is moved to ADflow in #196 . This issue is moved from the MPhys repo: OpenMDAO/mphys#61