Red Hat Satellite 6 upgrade failed with an error "Could not find private key from /root/ssl-build/katello-default-ca.key".

Issue

• satellite-maintain upgrade command fails on Red Hat Satellite server with below error:

  [ERROR ] [configure] /Stage[main]/Certs::Candlepin/Certs::Keypair[katello-default-ca]/Private_key[/etc/candlepin/certs/candlepin-ca.key]: Could not evaluate: Execution of '/bin/openssl rsa -in /root/ssl-build/katello-default-ca.key -passin file:/root/ssl-build/katello-default-ca.pwd -text' returned 1: Could not find private key from /root/ssl-build/katello-default-ca.key
  [ERROR ] [configure] 004E1E81B07F0000:error:1608010C:STORE routines:ossl_store_handle_load_result:unsupported:crypto/store/store_result.c:151:
  [ERROR ] [configure] 004E1E81B07F0000:error:1C800064:Provider routines:ossl_cipher_unpadblock:bad decrypt:providers/implementations/ciphers/ciphercommon_block.c:107:
  [ERROR ] [configure] 004E1E81B07F0000:error:11800074:PKCS12 routines:PKCS12_pbe_crypt_ex:pkcs12 cipherfinal error:crypto/pkcs12/p12_decr.c:84:maybe wrong password
  

• Or

  [ERROR ] [configure] /Stage[main]/Certs::Candlepin/Certs::Keypair[katello-default-ca]/Private_key[/etc/candlepin/certs/candlepin-ca.key]: Could not evaluate: Execution of '/bin/openssl rsa -in /root/ssl-build/katello-default-ca.key -passin file:/root/ssl-build/katello-default-ca.pwd -text' returned 1: Could not find private key from /root/ssl-build/katello-default-ca.key
  [ERROR ] [configure] 007EF22DF47F0000:error:1608010C:STORE routines:ossl_store_handle_load_result:unsupported:crypto/store/store_result.c:151:
  [ERROR ] [configure] 007EF22DF47F0000:error:0308010C:digital envelope routines:inner_evp_generic_fetch:unsupported:crypto/evp/evp_fetch.c:355:Global default library context, Algorithm (DES-EDE3-CBC : 65), Properties ()