When a certificate CN is not the same as the file-name then show-expire
must calculate the expiry date, in seconds, from the database field.
This is done by functions:
* db_date_to_iso_8601_date()
Translate from database format to ISO_8601 date format.
* iso_8601_timestamp_to_seconds()
Translate from ISO_86012 date format to time-stamp in seconds.
Signed-off-by: Richard T Bonhomme <tincantech@protonmail.com>
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