interfaces: T6393: install mirror and redirect filters for VLAN targets

A VLAN sub-interface used as mirror or redirect target (e.g. bond0.10) was
only accepted if it already existed in the Kernel. The configuration
committed at runtime, but at boot the source interface is committed before
the VLAN is created - verify failed and the whole source interface was
rolled back, as reported for tunnel targets.

A VLAN target is now also accepted if its parent interface has the vif,
vif-s or vif-c configured on the CLI. VLAN sub-interfaces learn which
interfaces mirror or redirect into them and install their filters once
created, as other interfaces already do.

Add a config load test mirroring and redirecting into tunnel and bond VLAN
targets, which are committed after the ethernet sources.

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