Issue 51144 - dsctl fails with instance names that contain slapd-
Bug Description: If an instance name contains 'slapd-' the CLI breaks:
slapd-test-slapd
Fix Description: Only strip off "slapd-" from the front of the instance
name.
relates: https://pagure.io/389-ds-base/issue/51144
Reviewed by: firstyear(Thanks!)