Add support for UpdateStrategy when collector mode is Deployment

[sky333999]

Description of changes: The CRD supports configuring UpdateStrategy when the collector mode is a DaemonSet, but not when its a Deployment. This extends support for configuring it for Deployments as well.

Testing:

• Prior to this change, any modifications to the AmazonCloudWatchAgent custom resource would fail validations when its of type deployment as per follows:

kubectl patch amazoncloudwatchagents cloudwatch-agent-ci -n amazon-cloudwatch --type merge -p '{"spec":{"tolerations":[{"operator":"Exists"}]}}'
Error: UPGRADE FAILED: cannot patch "cloudwatch-agent-ci" with kind AmazonCloudWatchAgent: admission webhook "[vamazoncloudwatchagentcreateupdate.kb.io](http://vamazoncloudwatchagentcreateupdate.kb.io/)" denied the request: the OpenTelemetry Collector mode is set to deployment, which does not support the attribute 'updateStrategy'

• Deployed a dev version of the operator with the change, and the same command after succeeds as per follows:

kubectl patch amazoncloudwatchagents cloudwatch-agent-ci -n amazon-cloudwatch --type merge -p '{"spec":{"tolerations":[{"operator":"Exists"}]}}'                                                    
amazoncloudwatchagent.cloudwatch.aws.amazon.com/cloudwatch-agent-ci patched

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[mitali-salvi]

Were we able to test this ?