[Change by Roopa] To prevent ifupdown2 setting clag-bond slave states on ifup.

[Change by Roopa] To prevent ifupdown2 setting clag-bond slave states on ifup.

Ticket: CM-4802
Reviewed By: CCR-2507
Testing Done: Yes

1. For clag bonds the slaves are kept down under various conditions (when clagd
is holding the bond in an errDisabled state). ifupdown2 should not set the slave
states for clag bonds.
2. Bonding driver sets the slave states on enslave and release (also for
non-clag bonds) so ifupdown2 doesn't need to set the slave state.