Added the tag_cluster_resources policy

[athiruma]

Type of change

Note: Fill x in []

• bug
• enhancement
• documentation
• dependencies

Description

Added the tag_cluster_resources policy in the approach.

Approach:

1. Find the cluster tag from ec2 instances
2. Get the Username from one of the cluster instance
3. Get the user tags and filter the updated tags
4. Use the aws resource_group_tagging_api to tag all the resources having the cluster_tag

Note: Added the OptionalTags env var: ['Owner', 'Manager', 'Project', 'Environment']. This helps this can use any account without adding NA values to these keys.

By following the above approach we can tag all the resources that belong to the cluster in a single click.

Reference:
ResourceGroupTagging: Link1, Link2

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