wolfssl ssl_store_cert(): Consistently use log_error() to log errors

wolfssl ssl_store_cert(): Consistently use log_error() to log errors

Previously log_ssl_errors() was used which only works for TLS errors.

Prevents logging stale errors like:

15:10:34.153 007 Error: X509 certificate verification for www.youtube.com failed with error -161: ASN alternate name error
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: RSA key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: ECC key too small
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: ASN alternate name error
15:10:34.156 007 Error: wolfSSL_PEM_write_bio_X509() failed: ASN alternate name error
15:10:34.156 007 Error: ssl_store_cert() failed for cert 2
15:10:34.156 007 Error: Incomplete certificate information for www.youtube.com.

While at it, add periods to log messages.