Changes

mme: add missing MME_Tests_emergency.cfg

Fix for:
  install: cannot stat '…/mme/MME_Tests_emergency.cfg': No such file or directory

(Config added by Andreas, commit message by Oliver)

Fixes: a8eb4c70 ("MME-Tests: Add tests for emergency cappability indication")
Change-Id: Id282981a735f9f5e29f957dc395210f5e785bff3