Add a module 'openssl_pkcs12_pipe' on the same model as other '_pipe' modules

[zigarn]

SUMMARY

Add a new module openssl_pkcs12_pipe that would "Generate OpenSSL PKCS#12 archive without disk access".

Exactly on the same model as modules openssl_csr_pipe, openssl_privatekey_pipe and x509_certificate_pipe.

ISSUE TYPE

• Feature Idea

COMPONENT NAME

openssl_pkcs12_pipe

ADDITIONAL INFORMATION

Our use case is a PKCS#12 keystore stored as a Kubernetes secret and updated through ansible.
Without this openssl_pkcs12_pipe we have to use a temporary on-disk file to handle the keystore.