CA-less installer options usability fixes
The --*_pkcs12 options of ipa-server-install and ipa-replica-prepare have
been replaced by --*-cert-file options which accept multiple files.
ipa-server-certinstall now accepts multiple files as well. The files are
accepted in PEM and DER certificate, PKCS#7 certificate chain, PKCS#8 and
raw private key and PKCS#12 formats.
The --root-ca-file option of ipa-server-install has been replaced by
--ca-cert-file option which accepts multiple files. The files are
accepted in PEM and DER certificate and PKCS#7 certificate chain formats.
The --*_pin options of ipa-server-install and ipa-replica-prepare have been
renamed to --*-pin.
Reviewed-By: Petr Viktorin <firstname.lastname@example.org>