Fix volume name of daemonsets to follow DNS-1123 label standard

[n0gu]

Description of changes:

When trying to use aws-node-termination-handler with webhookTemplateConfigMapName and webhookTemplateConfigMapKey configured, following error occurs:

Error: UPGRADE FAILED: cannot patch "aws-node-termination-handler" with kind DaemonSet: DaemonSet.apps "aws-node-termination-handler" is invalid: [spec.template.spec.volumes[1].name: Invalid value: "webhookTemplate": a DNS-1123 label must consist of lower case alphanumeric characters or '-', and must start and end with an alphanumeric character (e.g. 'my-name',  or '123-abc', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?'), spec.template.spec.containers[0].volumeMounts[1].name: Not found: "webhookTemplate"]

This PR fixes those names.

see also: aws/eks-charts#363

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-io]

Codecov Report

Merging #300 (677faf9) into main (9ec8655) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #300   +/-   ##
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  Coverage   74.76%   74.76%           
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  Files          17       17           
  Lines        1169     1169           
=======================================
  Hits          874      874           
  Misses        253      253           
  Partials       42       42           

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[bwagner5]

thanks for this! Can you update the chart version to 0.13.1

[bwagner5]

up the chart version to 0.13.1

[bwagner5]

Sorry for the back-and-forth, you'll need to rebase the change too in order to resolve the chart version conflict.

[bwagner5]

looks like the template changes got reverted when you rebased

[bwagner5]

LGTM! 🚀