(Optional) Specifies the type of SSL certificate, either
"SELF_MANAGED" or "MANAGED". If not specified, the certificate is
self-managed and the fields certificate and private_key are used.
Values:
UNDEFINED_TYPE (0):
A value indicating that the enum field is not
set.
MANAGED (479501183):
Google-managed SSLCertificate.
SELF_MANAGED (434437516):
Certificate uploaded by user.
TYPE_UNSPECIFIED (437714322):
No description available.
