If true, Gerrit will allow project owners to update project parent.
By default only Gerrit administrators are allowed to change the parent
of a project. By allowing project owners to change parents, it may
allow the owner to circumvent certain enforced rules (like important
BLOCK rules).
Though for some organisations, this rule is not as beneficial and
introduces costs by increased lead times of project configuration
changes.
Change-Id: Iefa35b7efad3b22a456ab5c0162937b985a245a1
fd5fcf4058