Fix CustodiaClient ccache handling
A CustodiaClient object has to the process environment a bit, e.g. set
up GSSAPI credentials. To reuse the credentials in libldap connections,
it is also necessary to set up a custom ccache store and to set the
environment variable KRBCCNAME temporarily.
Fixes: https://pagure.io/freeipa/issue/7964
Co-Authored-By: Fraser Tweedale <ftweedal@redhat.com>
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>