trusts: Do not pass base-id to the subdomain ranges
For trusted domains base id is calculated using a murmur3 hash of the
domain Security Identifier (SID). During trust-add we create ranges for
forest root domain and other forest domains. Since --base-id explicitly
overrides generated base id for forest root domain, its value should not
be passed to other forest domains' ranges -- their base ids must be
calculated based on their SIDs.
In case base id change for non-root forest domains is required, it can
be done manually through idrange-mod command after the trust is
established.
https://fedorahosted.org/freeipa/ticket/4041