Update Azure dependencies

* azure-sdk-for-go to 3.1.0-beta
 * go-autorest to 7.0.7
 * import dgrijalva/jwt-go at 3.0.0

builder/azure/arm/config.go

@@ -299,21 +299,37 @@ func setUserNamePassword(c *Config) {
 }
 
 func setCloudEnvironment(c *Config) error {
+	lookup := map[string]string{
+		"CHINA":           "AzureChinaCloud",
+		"CHINACLOUD":      "AzureChinaCloud",
+		"AZURECHINACLOUD": "AzureChinaCloud",
+
+		"GERMAN":           "AzureGermanCloud",
+		"GERMANCLOUD":      "AzureGermanCloud",
+		"AZUREGERMANCLOUD": "AzureGermanCloud",
+
+		"GERMANY":           "AzureGermanCloud",
+		"GERMANYCLOUD":      "AzureGermanCloud",
+		"AZUREGERMANYCLOUD": "AzureGermanCloud",
+
+		"PUBLIC":           "AzurePublicCloud",
+		"PUBLICCLOUD":      "AzurePublicCloud",
+		"AZUREPUBLICCLOUD": "AzurePublicCloud",
+
+		"USGOVERNMENT":           "AzureUSGovernmentCloud",
+		"USGOVERNMENTCLOUD":      "AzureUSGovernmentCloud",
+		"AZUREUSGOVERNMENTCLOUD": "AzureUSGovernmentCloud",
+	}
+
 	name := strings.ToUpper(c.CloudEnvironmentName)
-	switch name {
-	case "CHINA", "CHINACLOUD", "AZURECHINACLOUD":
-		c.cloudEnvironment = &azure.ChinaCloud
-	case "GERMAN", "GERMANCLOUD", "AZUREGERMANCLOUD":
-		c.cloudEnvironment = &azure.GermanCloud
-	case "PUBLIC", "PUBLICCLOUD", "AZUREPUBLICCLOUD":
-		c.cloudEnvironment = &azure.PublicCloud
-	case "USGOVERNMENT", "USGOVERNMENTCLOUD", "AZUREUSGOVERNMENTCLOUD":
-		c.cloudEnvironment = &azure.USGovernmentCloud
-	default:
+	envName, ok := lookup[name]
+	if !ok {
 		return fmt.Errorf("There is no cloud envionment matching the name '%s'!", c.CloudEnvironmentName)
 	}
 
-	return nil
+	env, err := azure.EnvironmentFromName(envName)
+	c.cloudEnvironment = &env
+	return err
 }
 
 func provideDefaultValues(c *Config) {

builder/azure/common/vault_test.go

@@ -24,4 +24,3 @@ func TestVaultClientKeyVaultEndpointPreserveScheme(t *testing.T) {
 		t.Errorf("expected \"http://my.vault.azure.net/\", got %q", vaultUrl)
 	}
 }
-

website/source/docs/builders/azure.html.md

@@ -57,7 +57,7 @@ builder.
 
 ### Optional:
 
--   `cloud_environment_name` (string) One of `Public`, `China`, `German`, or
+-   `cloud_environment_name` (string) One of `Public`, `China`, `Germany`, or
     `USGovernment`. Defaults to `Public`. Long forms such as
     `USGovernmentCloud` and `AzureUSGovernmentCloud` are also supported.