Backporting to stretch: OpenSSL versions mix

[wferi at niif.hu]

Etienne Dysli Metref <etienne.dysli-metref at switch.ch> writes:

> Hmm wait a minute... I just discovered that the produced
> shibboleth-sp-utils 3.0.4+dfsg1-1~bpo9+1 has `Pre-Depends:
> init-system-helpers (>= 1.54~)` and that makes it uninstallable on
> stretch. Can we work around or remove it? (commit 0a57ca6b)

Not easily.  Could you please test by installing init-system-helpers
from buster?  I opened #925524 to solicit opinions from its maintainers.
-- 
Cheers,
Feri