Update Fabric manager unit test

Signed-off-by: Hanwen <[email protected]>

Author: hanwen-cluster

cookbooks/aws-parallelcluster-platform/spec/unit/resources/fabric_manager_spec.rb

@@ -168,7 +168,7 @@ def self.configure(chef_run)
 
   for_all_oses do |platform, version|
     context "on #{platform}#{version}" do
-      cached(:fabric_manager_package) { platform == 'ubuntu' ? 'nvidia-fabricmanager-535' : 'nvidia-fabric-manager' }
+      cached(:fabric_manager_package) { platform == 'ubuntu' ? 'nvidia-fabricmanager-550' : 'nvidia-fabric-manager' }
       cached(:fabric_manager_version) { platform == 'ubuntu' ? "#{nvidia_driver_version}" : nvidia_driver_version }
 
       context 'when fabric manager is to install' do