[NewPM] Switch -filter-passes from ClassName to pass-name

NewPM -filter-passes (D86360) uses ClassName instead of pass-name as used in
`-passes`, `-print-after`, etc. D87216 has added a mechanism to map
ClassName to pass-name. Adopt it for -filter-passes.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D133263