Add spec to verify PowerVS credentials

Author: jaywcarman

spec/models/manageiq/providers/ibm_cloud/power_virtual_servers/cloud_manager/verify_credentials_spec.rb

@@ -0,0 +1,20 @@
+describe ManageIQ::Providers::IbmCloud::PowerVirtualServers::CloudManager do
+  it ".ems_type" do
+    expect(described_class.ems_type).to eq("ibm_cloud_power_virtual_servers")
+  end
+
+  let(:ems) do
+    uid_ems  = Rails.application.secrets.ibm_cloud_power[:cloud_instance_id]
+    auth_key = Rails.application.secrets.ibm_cloud_power[:api_key]
+
+    FactoryBot.create(:ems_ibm_cloud_power_virtual_servers_cloud, :uid_ems => uid_ems).tap do |ems|
+      ems.authentications << FactoryBot.create(:authentication, :auth_key => auth_key)
+    end
+  end
+
+  it "verify credentials" do
+    VCR.use_cassette(described_class.name.underscore) do
+      ems.verify_credentials
+    end
+  end
+end