Fix cert_provider_test with recent versions of openssl
Fix cert_provider_test with recent versions of openssl

On OpenSSL 1.1.1b 26 Feb 2019, the line shows as:

    RSA Private-Key: (1024 bit, 2 primes)

Instead of:

    RSA Private-Key: (1024 bit)

Signed-off-by: Laurent Bonnans <0909bc0a3d1b0c91d8e00372b9633e8e9ea958de@here.com>

advancedtelematic/sota_client_cpp,advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/sota_client_cpp