Stratum chunk desc/chunk file name miss-matches cause problems

[leeming]

In the event that names do not match from your stratum and chunk morph files, unexpected things may happen, but likely to raise a misleading exception. Issue is reported to the user when running this line and receiving a NoneType

Example stratum ( abc.morph)

name: abc
kind: stratum
chunks:

• name: foo

  morph: /path/to/foo.morph
  repo: url-to/my.git
  ref: shahash123

Example chunk ( foo.morph)

name: bar
kind: chunk
build-commands:

• example-build-intr

[devcurmudgeon]

if you want to error on this, set check-definitions: exit in config. Unfortunately there seem to be quite a few examples of this in baserock definitions master, so i think we should not exit by default until those are fixed.