Factor out _make_run_grpc_server

[zyxue]

continuation of #4268 to make main more modular and readable.

[seldondev]

Hi @zyxue. Thanks for your PR.

I'm waiting for a SeldonIO or todo member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[axsaucedo]

Nice one - thank you @zyxue

[axsaucedo]

/test integration

[axsaucedo]

/test integration

[zyxue]

@axsaucedo , am I able to see the failed test?

[axsaucedo]

@zyxue it seems it was a flaky test, we'll re-run
/test integration

[axsaucedo]

Thank you once again for the contribution @zyxue !
/approve

[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: axsaucedo

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[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: axsaucedo

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [axsaucedo]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment