UI fix message.add.vpn.customer.gateway.failed when catched error

[hooklee2000]

Description
Types of changes

As 4.17.0.0,when catched error, we changed message.success.add.vpn.customer.gateway to
message.add.vpn.customer.gateway.failed.

Bug fix (non-breaking change which fixes an issue)

Feature/Enhancement Scale or Bug Severity
Bug Severity

Minor

[boring-cyborg]

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[acs-robot]

Found UI changes, kicking a new UI QA build
@blueorangutan ui

[blueorangutan]

@acs-robot a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

@acs-robot a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: http://qa.cloudstack.cloud:8080/client/pr/6489 (SL-JID-1817)

[yadvr]

@hooklee2000 can you change the base branch of the PR to 4.17 and rebase your PR branch to the 4.17 branch?

[hooklee2000]

Closed by a new pr #6493