pfpki: PKI templates can be modified by a SCEP request

[nqb]

Describe the bug
If you create a PKI template with values for following fields : organisation, organisational_unit, country, state, locality, ocsp_url. Values of these fields (in PKI template) are removed when you request a certificate through SCEP using this PKI template.

User certificates doesn't contain these values too.

Has been noticed on 11.0.0, can be replicate on devel.

To Reproduce
Steps to reproduce the behavior:

1. Create a CA
2. Create a PKI template with values for organisation, organisational_unit, country, state, locality, ocsp_url (with SCEP enabled)
3. Request a certificate through SCEP
4. Look value of fields for PKI template

=> They have been removed

5. Look value of fields for user certificate

=> Values are not here

Expected behavior

• PKI template should not be updated by a SCEP request
• User certificate should contain values of PKI template

Additional context
There is no specific error in logs.