test: s/southcentralus/uksouth (#1949)

test/e2e/config/config.go

@@ -296,7 +296,7 @@ func (c *Config) IsKubernetes() bool {
 func (c *Config) SetRandomRegion() {
 	var regions []string
 	if c.Regions == nil || len(c.Regions) == 0 {
-		regions = []string{"eastus", "southcentralus", "southeastasia", "westus2", "westeurope"}
+		regions = []string{"eastus", "uksouth", "southeastasia", "westus2", "westeurope"}
 	} else {
 		regions = c.Regions
 	}

test/e2e/config/config_test.go

@@ -28,13 +28,13 @@ func TestSetRandomRegion(t *testing.T) {
 			config: Config{
 				Regions: []string{},
 			},
-			expected: []string{"eastus", "southcentralus", "southeastasia", "westus2", "westeurope"},
+			expected: []string{"eastus", "uksouth", "southeastasia", "westus2", "westeurope"},
 		},
 		{
 			config: Config{
 				Regions: nil,
 			},
-			expected: []string{"eastus", "southcentralus", "southeastasia", "westus2", "westeurope"},
+			expected: []string{"eastus", "uksouth", "southeastasia", "westus2", "westeurope"},
 		},
 		{
 			config: Config{