Adding Logs On How We Calculate CSINode.allocatables in NodeGetInfo

[mdzraf]

What type of PR is this?

/kind cleanup

What is this PR about? / Why do we need it?

Today we log number of attached ENIs upon driver start if IMDS is our metadata source. However, we accidentally log it even if driver is in controller mode, which is an confusing experience for customers (Why should ebs-csi-controller care about the ENI count of the node it is on?)

This PR removes logging of ENIs when in controller mode and also adds logging of some of the information used to calculate CSI Node Allocatable, this way customers can have a better understanding of how this final node allocatable count was calculated.

How was this change tested?

Manually by spinning up a cluster and checking logs for nodes.

Logs output looks like this:

node.go:777] "getVolumesLimit:" instanceType="c5.large"
node.go:781] "getVolumesLimit:" maxAttachments=28
node.go:786] "getVolumesLimit:" numBlockDevices=0
node.go:789] "getVolumesLimit:" reservedVolumeAttachments=1
node.go:802] "getVolumesLimit:" numeENIs=1
node.go:804] "getVolumesLimit:" reservedSlots=0
node.go:597] "NodeGetInfo:" Node Allocatables=26

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

Hi @mdzraf. 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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[ElijahQuinones]

/ok-to-test

[k8s-ci-robot]

New changes are detected. LGTM label has been removed.

[k8s-ci-robot]

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[ElijahQuinones]

typo: numeENIs