Fix build error for build configured with --without-ft

[ttm02]

These functions are only defined with ENABLE_FT_MPI
Or is a build configuration --without-ft invalid?

[github-actions]

Hello! The Git Commit Checker CI bot found a few problems with this PR:

4f854bd: Fix build error for build configured with --withou...

• check_signed_off: does not contain a valid Signed-off-by line

Please fix these problems and, if necessary, force-push new commits back up to the PR branch. Thanks!

[jsquyres]

@bosilca @abouteiller Can you comment?

These functions are labaled "noft", but yet they're still defined only inside #if OPAL_ENABLE_FT_MPI -- is that right?

[abouteiller]

Configuration --without-ft should be valid, I think the PR will make it compile but fail at runtime, let me double check it.

[bosilca]

Looks legit. It won't fail at runtime because the FT function cannot be called directly by the user in that case, and because the checks for collective validation ignores the FT functions if FT is disabled).