Fix network/image webhook validations

[Prajyot-Parab]

Signed-off-by: Prajyot-Parab [email protected]

What this PR does / why we need it:

• Fix network name and id related webhook validation checks
• Fix image name and id related webhook validation checks

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 #521

Special notes for your reviewer:

/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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[k8s-ci-robot]

Hi @Prajyot-Parab. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[mkumatag]

Instead of this, I'm wondering if we can have following marker for the API spec to force user to specify the non empty string like:

+kubebuilder:validation:MinLength=1

[Prajyot-Parab]

Instead of this, I'm wondering if we can have following marker for the API spec to force user to specify the non empty string like:

+kubebuilder:validation:MinLength=1

checking

[mkumatag]

/ok-to-test

[mkumatag]

fix the test failure as well.

[mkumatag]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mkumatag, Prajyot-Parab

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