pull yurt-tunnel-server image when IfNotPresent

[Congrool]

What type of PR is this?

/kind bug

What this PR does / why we need it:

To avoid using different version of yurt-tunnel-agent and yurt-tunnel-server.

Which issue(s) this PR fixes:

Fixes #511

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

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In response to this:

What type of PR is this?

/kind bug

What this PR does / why we need it:

To avoid using different version of yurt-tunnel-agent and yurt-tunnel-server.

Which issue(s) this PR fixes:

Fixes #511

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[rambohe-ch]

@Congrool how about update imagePullPolicy of config/setup/yurt-tunnel-server.yaml and config/yaml-template/yurt-tunnel-server.yaml at the same time?

[Congrool]

@Congrool how about update imagePullPolicy of config/setup/yurt-tunnel-server.yaml and config/yaml-template/yurt-tunnel-server.yaml at the same time?

Sure, I'll do it.

[rambohe-ch]

/lgtm
/approve

[rambohe-ch]

/lgtm
/approve

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Congrool, rambohe-ch

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