Keep Dogtag's client db in external CA step 1
Don't remove /root/.dogtag/pki-tomcat when performing step 1 of external
CA installation process. Dogtag 10.6.7 changed behavior and no longer
re-creates the client database in step 2.
Fixes: https://pagure.io/freeipa/issue/7742
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>