Fix block_migration parameter in function live_migration
for _live_migrate_server in test_network_basic_ops

Related-prod: PRODX-35782
Change-Id: I24cd3982ec388ab5bc9850829c22aa03292dd99d
(cherry picked from commit 0084efb63e33e7f6b59fbebb770e912b6179cfa4)
(cherry picked from commit d2b8350750d4622ee16e2dc6a87cf6c8a2d8b319)
1 file changed