LU-18129 tests: wait longer for tcp connections to establish

LU-18129 tests: wait longer for tcp connections to establish

In sanity-lnet test_230, increase the wait time for the
requested number of connections to establish before checking:
this is important for high conns_per_peer values.
To the same case, added setting of conns_per_peer at "net add".

Test-Parameters: trivial
Test-Parameters: testlist=sanity-lnet env=ONLY=230,ONLY_REPEAT=100 clientdistro=ubuntu2404
Test-Parameters: testlist=sanity-lnet env=ONLY=230,ONLY_REPEAT=100 clientdistro=ubuntu2404
Test-Parameters: testlist=sanity-lnet env=ONLY=230,ONLY_REPEAT=100 clientdistro=ubuntu2404
Test-Parameters: testlist=sanity-lnet env=ONLY=230,ONLY_REPEAT=100 clientdistro=ubuntu2404
Test-Parameters: testlist=sanity-lnet env=ONLY=230,ONLY_REPEAT=100 clientdistro=ubuntu2404
Signed-off-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Change-Id: I1137251afddf54c4b5dd2bb9426d3e6cbf459748
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57350
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Caleb Carlson <caleb.carlson@hpe.com>
Reviewed-by: Cyril Bordage <cbordage@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>