message: Fix feature list and dependencies for package axom.
diff: Source: axom
  Version: develop
  Description: Host-config generator for Axom TPLs
  -Build-Depends: hdf5, conduit, mfem
  -Default-Features: hdf5, conduit, mfem
  +Default-Features: conduit, mfem
  Feature: mfem
  Description: Adds basic (serial) mfem support to Axom
  Build-Depends: mfem
  +
  +Feature: conduit
  +Description: Enables data exchange using Conduit
  +Build-Depends: conduit
  