Feature/cfs bc enforce values

CHANGELOG.md

docs/user-guide/solvers/compressible-flow.tex

...eFlowSolver/BoundaryConditions/EnforceEntropyPressure.cpp

...bleFlowSolver/BoundaryConditions/EnforceEntropyPressure.h

...Solver/BoundaryConditions/EnforceEntropyTotalEnthalpy.cpp

...owSolver/BoundaryConditions/EnforceEntropyTotalEnthalpy.h

...eFlowSolver/BoundaryConditions/EnforceEntropyVelocity.cpp

...bleFlowSolver/BoundaryConditions/EnforceEntropyVelocity.h

...CompressibleFlowSolver/BoundaryConditions/EnforceRhoP.cpp

solvers/CompressibleFlowSolver/CMakeLists.txt

...essibleFlowSolver/Tests/cfs_bc_enforceEntropyPressure.tst

...leFlowSolver/Tests/cfs_bc_enforceEntropyTotalEnthalpy.tst

...essibleFlowSolver/Tests/cfs_bc_enforceEntropyVelocity.tst

...ssibleFlowSolver/Tests/session_enforceEntropyPressure.xml

...eFlowSolver/Tests/session_enforceEntropyTotalEnthalpy.xml

...ssibleFlowSolver/Tests/session_enforceEntropyVelocity.xml

solvers/CompressibleFlowSolver/Tests/square_mix.xml