[LU-10418] revise lease API

• Type: Task
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.11.0
• Labels: FLR
• Assignee: Jian Yu
• Reporter: Joseph Gmitter (Inactive)

Description

Introduce two lease API llapi_lease_

{acquire,release}

() to replace
confusing llapi_lease_

{get,put}

(). Rename llapi_lease_ext_get() to
llapi_lease_set(). Implement new mirror_extend_layout() to separate
lfs_migrate().