kind: fix script var scope

[tarilabs]

Description

since the IMG var is also used without going through the if/branch in the main scripts few lines below

model-registry/scripts/deploy_on_kind.sh

Lines 40 to 41 in a12fd00

	--patch '{"spec": {"template": {"spec": {"containers": [{"name": "rest-container", "image": "'$IMG'", "imagePullPolicy": "IfNotPresent"}]}}}}'

fix variable scope by providing the default globally.

How Has This Been Tested?

 ./scripts/deploy_on_kind.sh

Merge criteria:

• All the commits have been signed-off (To pass the DCO check)

• The commits have meaningful messages; the author will squash them after approval or in case of manual merges will ask to merge with squash.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work.
• Code changes follow the kubeflow contribution guidelines.

If you have UI changes

• The developer has added tests or explained why testing cannot be added.
• Included any necessary screenshots or gifs if it was a UI change.
• Verify that UI/UX changes conform the UX guidelines for Kubeflow.

wdyt @Al-Pragliola ?

[Al-Pragliola]

nice catch, /lgtm

[rareddy]

/lgtm
/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Al-Pragliola, rareddy

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 [rareddy]

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