[openssl/openssl] 9277ed: Fix remaining provider config settings to be decis...

[Neil Horman]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 9277ed0a4fc082807ad8d8f66925fb7968437cf6
      https://github.com/openssl/openssl/commit/9277ed0a4fc082807ad8d8f66925fb7968437cf6
  Author: Neil Horman <nhorman at openssl.org>
  Date:   2023-12-27 (Wed, 27 Dec 2023)

  Changed paths:
    M CHANGES.md
    M crypto/provider_conf.c
    M doc/man5/config.pod

  Log Message:
  -----------
  Fix remaining provider config settings to be decisive in value

There is one remaining config setting for providers, soft_load, which is
enabled when provided in a config, regardless of its value.  Augment it
to require a decisive value 1/0, yes/no, on/off, true/false, as we've
recently done for the activate setting.

Also, since it wasn't previously documented, add docs for it.

Fixes #23105

Reviewed-by: Tom Cosgrove <tom.cosgrove at arm.com>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/23111)