feat: Support to pass image credentials

[aatreyee2506]

Description

Added support to pass image credentials when pulling kibana image from a private registry.
Git_issue

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Release notes content

Added support for passing image pull credentials when deploying Kibana from a private registry, along with tests for the same.

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• If relevant, a test for the change is included or updated with this PR.
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[aatreyee2506]

/run pipeline

[aatreyee2506]

Case 1:
with image-secret:

Case 2:
without image-secret:

[Ak-sky]

Case 1: with image-secret:

Case 2: without image-secret:

I am seeing docker pull command, why are we doing this? This should be done by TF when setting credentials for the TF to pull the Kibana image.

[Ak-sky]

@aatreyee2506 , Also are we allowed to use docker?

[Ak-sky]

@aatreyee2506 , Also are we allowed to use docker?

Ok we can use Docker engine and not docker desktop.

[aatreyee2506]

/run pipeline

[aatreyee2506]

/run pipeline

[aatreyee2506]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[shemau]

/run pipeline

[shemau]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[aatreyee257]

/run pipeline

[daniel-butler-irl]

@aatreyee2506 Since there is no test for this (@ocofaigh do you think one is needed?), can you confirm you deployed this and it all works as expected?