Refactor infra creation to improve the overall infra setup time

[dharaneeshvrd]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged): Fixes #1837

Special notes for your reviewer:

With the changes, infra creation takes around ~8 mins. Most time taking resource is DHCP server VM.

/area provider/ibmcloud

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Release note:

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[dharaneeshvrd]

@Karthik-K-N

Whats the time difference between old vs new approach?

Currently it's taking around 15 mins and with these changes it is taking around 8 to 9 mins.

[mkumatag]

@dharaneeshvrd as per the discussion, lets get the early testing done with this PR to ensure it is working fine

[mkumatag]

@dharaneeshvrd as per the discussion, lets get the early testing done with this PR to ensure it is working fine

Any update on this?

/cc @Karthik-K-N

please take a look and give lgtm if no more comments

[dharaneeshvrd]

@mkumatag

Any update on this?

I have tested personally and Ashwin Hendre also able to test this and reported the improvement of 12% overall cluster setup time.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dharaneeshvrd, mkumatag

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