Calico: Upgrade the "k8s-ec2-srcdst" controller to version v0.3.0

[seh]

Upgrading the k8s-ec2-srcdst controller to this latest version allows it to work correctly with the objects containing the new "metadata.managedFields" field introduced in Kubernetes version 1.18.0, per ottoyiu/k8s-ec2-srcdst#17.

The previous container image versions used a version of the client-go library that was too old to consume these fields
correctly, causing the controller to fail repeatedly when trying to read Node objects retrieved from the Kubernetes API server.

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[rifelpet]

/ok-to-test

Thanks for the update! We'll want to make sure this is included in Kops 1.18 as well.

[hakman]

@seh Please increment also the manifest version, like I did in 3336d7b.

[seh]

Please increment also the manifest version

Ah, I missed that. Please confirm that this change takes care of that properly.

[hakman]

Look good now. Thanks!
/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hakman, seh

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