[Issue 1282][test] use pulsar-client-go-test docker to test TestBlueGreenMigrationTestSuite case

[geniusjoe]

Contribution Checklist

Issue #1282

Motivation

Use pulsar-client-go-test docker to test TestBlueGreenMigrationTestSuite case, so that we can get rid of local environment go pkg dependencies.

Modifications

1. Use integration-tests/extensible-load-manager/docker-compose.yml docker network in integration-tests/blue-green/docker-compose.yml green cluster, to make sure two clusters are in the same network environment.
2. Use new unique service names in integration-tests/blue-green/docker-compose.yml green cluster to avoid service name duplication.
3. Use service name instead of service forwarding port in pulsar/blue_green_migration_test.go.

Verifying this change

• Make sure that the change passes the CI checks.

This change added tests and can be verified as follows:

• Updated integration tests

Does this pull request potentially affect one of the following parts:

If yes was chosen, please highlight the changes

• Dependencies (does it add or upgrade a dependency): (no)
• The public API: (no)
• The schema: (no)
• The default values of configurations: (no)
• The wire protocol: (no)

Documentation

• Does this pull request introduce a new feature? (no)