auth: add rooturl configuration in gcp authentication

[YangKeao]

Signed-off-by: YangKeao yangkeao@chunibyo.icu

What problem does this PR solve?

Try to get the scheme and host from the request is not realistic. If the dashboard is deployed behind a load balancer, it will have no way to guess the scheme. In this PR, I added a config field, so that the users can set the root url manually. The dashboard will append /api/auth/gcp/callback to the path.

BTW, it also installs the ca-certificates to the chaos-dashboard container, which is required to avoid x509 error.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• STRRL
• g1eny0ung

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[STRRL]

LGTM! It works!

[g1eny0ung]

LGTM 🍺

[g1eny0ung]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 135f2b7

[cwen0]

/run-e2e-tests

[YangKeao]

/merge

[STRRL]

/run-e2e-tests

[ti-chi-bot]

@YangKeao: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

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[YangKeao]

/run-e2e-tests