ipa-server-upgrade now checks custodia server keys
The ipa-server-upgrade command now checks for presence of ipa-custodia's
config and server keys. In case any of the files is missing, it
re-creates both files.
Partly resolves https://pagure.io/freeipa/issue/6893. The upgrader does
not auto-detect broken or mismatching keys yet.
Signed-off-by: Christian Heimes <email@example.com>
Reviewed-By: Fraser Tweedale <firstname.lastname@example.org>