LU-18644 socklnd: make link state detection namespace-aware

LU-18644 socklnd: make link state detection namespace-aware

Check the network namespace of the device in the event against
the namespace associated with the ni and ignore events from
non-matching namespaces

Test-Parameters: trivial testlist=sanity-lnet
Signed-off-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Change-Id: I589399c0f2f85e5abd50d55079b79c44e30b4401
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57808
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Frank Sehr <fsehr@whamcloud.com>
Reviewed-by: Adam Peace <adam.peace@microsoft.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>