[LU-15930] Remove duplicate checks for peer sensitivity

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Assignee: Chris Horn
• Reporter: Chris Horn

Description

Callers of lnet_inc_lpni_healthv_locked() and
lnet_dec_healthv_locked() currently check whether the parent peer
has a peer specific sensitivity defined. This duplication should be removed.

We can also modify lnet_dec_healthv_locked() to return a bool indicating
whether the health value was actually modified so that the peer
net health is only updated when the peer NI health actually changes.