tree 69c28ccaa40c877f96a0357f6ff6c5a31e423881
parent 50b5009a550ca61c946979bbafc5bfd61827a8f9
author Andrew Geissler <geissonator@yahoo.com> 1702052142 -0600
committer Andrew Geissler <geissonator@yahoo.com> 1702052714 -0600

certs_manager: log all OpenSSL errors on failure

I've been hitting intermittent fails in this code running simulation
with my system1 machine.

```
Sep 20 11:23:29 system1 phosphor-certificate-manager[237]: Error occurred during generate EC key
Sep 20 11:23:29 system1 phosphor-certificate-manager[237]: The operation failed internally.
Sep 20 11:23:29 system1 phosphor-certificate-manager[237]: The operation failed internally.
```

This code path logs an InternalError, which causes a BMC dump to get
generated. That dump causes the automated CI tests to fail.

The fail only occurs 1 out of every 10 runs and there's not currently
enough info to debug the cause of the fail. I think it may have to do
with the network or time being reconfigured during the same time the
certificate code is running but I have no evidence.

Doing some internet searching, it seems this ERR_print_errors_fp() call
is the recommended way to collect any debug info from OpenSSL libraries.
  https://www.openssl.org/docs/man1.1.1/man3/ERR_print_errors_fp.html

Tested:
- Unfortunately I can not recreate this issue manually so all I've been
  able to test is that this builds and does not affect the good path.

Change-Id: I373b8f481f393b3e783c1a0270c8f6f729c426a5
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>