narrow endpoint env (#1304)

Author: AllyW

config/profile.go

@@ -253,7 +253,7 @@ func (cp *Profile) OverwriteWithFlags(ctx *cli.Context) {
 	}
 
 	if cp.Endpoint == "" {
-		cp.Endpoint = util.GetFromEnv("ALIBABA_CLOUD_ENDPOINT", "ALIBABACLOUD_ENDPOINT", "ALICLOUD_ENDPOINT", "ENDPOINT")
+		cp.Endpoint = util.GetFromEnv("ALIBABA_CLOUD_ENDPOINT")
 	}
 
 	if cp.CredentialsURI == "" {

config/profile_test.go

@@ -499,21 +499,23 @@ func TestOverwriteWithFlagsWithEndpointEnv(t *testing.T) {
 	actual.OverwriteWithFlags(ctx)
 	assert.Equal(t, exp, actual)
 
+	actual = newProfile()
 	os.Setenv("ENDPOINT", "endpoint1.aliyuncs.com")
 	actual.OverwriteWithFlags(ctx)
-	exp.Endpoint = "endpoint1.aliyuncs.com"
+	// endpoint env is intentionally narrowed to ALIBABA_CLOUD_ENDPOINT only
+	exp.Endpoint = ""
 	assert.Equal(t, exp, actual)
 
 	actual = newProfile()
 	os.Setenv("ALICLOUD_ENDPOINT", "endpoint2.aliyuncs.com")
 	actual.OverwriteWithFlags(ctx)
-	exp.Endpoint = "endpoint2.aliyuncs.com"
+	exp.Endpoint = ""
 	assert.Equal(t, exp, actual)
 
 	actual = newProfile()
 	os.Setenv("ALIBABACLOUD_ENDPOINT", "endpoint3.aliyuncs.com")
 	actual.OverwriteWithFlags(ctx)
-	exp.Endpoint = "endpoint3.aliyuncs.com"
+	exp.Endpoint = ""
 	assert.Equal(t, exp, actual)
 
 	actual = newProfile()