ospfd: update ospf_asbr_status when using no_area_nssa command

[Shbinging]

In the processing of nssa, if the number of areas that need to be translated is greater than 0, then abr will be regarded as asbr, and it will be marked (0x3) in the flag of router lsa. When a certain area is set from nssa to a normal area, the areas that need to be translated may be reduced. The asbr should be re-interpreted as abr when the translated area is 0.

CLOSES #17105

[Shbinging]

In ospf_abr.c line 434

		/* RFC3101, 3.1:
		 * All NSSA border routers must set the E-bit in the Type-1
		 * router-LSAs
		 * of their directly attached non-stub areas, even when they are
		 * not
		 * translating.
		 */
		if (old_state != area->NSSATranslatorState) {
			if (old_state == OSPF_NSSA_TRANSLATE_DISABLED)
				ospf_asbr_status_update(ospf,
							++ospf->redistribute);
			else if (area->NSSATranslatorState
				 == OSPF_NSSA_TRANSLATE_DISABLED)
				ospf_asbr_status_update(ospf,
							--ospf->redistribute);
		}

The comment does not match the logic of the code. The comment emphasizes the need to set the E-bit, but what the code actually does is to set the flag of the router LSA (mark ABR, ASBR)

[aceelindem]

Looks good. See one suggestion.