588f1dd dogtaginstance: avoid special cases for Server-Cert

Authored and Committed by ftweedal 9 months ago
    dogtaginstance: avoid special cases for Server-Cert
    
    The Dogtag "Server-Cert cert-pki-ca" certificate is treated
    specially, with its own track_servercert() method and other special
    casing.  But there is no real need for this - the only (potential)
    difference is the token name.  Account for the token name difference
    with a lookup method and treat all Dogtag system certs equally
    w.r.t. tracking request creation and removal.
    
    Part of: https://pagure.io/freeipa/issue/7991
    
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>