feat(tags): Set default tags & add opts: cluster tags, and other resource tags

[metral]

Fixes #74 - "Everything that can be tagged is now tagged."

This PR does the following:

• Adds a couple of new options:
  • Cluster class:
    • .tags - A map of tags that is applied to all AWS resources under management by a pulumi/eks cluster. Currently applied to: eksClusterSecurityGroup, nodeSecurityGroup, the Worker AutoScalingGroup (ASG), and cloudFormation stack.
    • .clusterSecurityGroupTags - A map of tags applied to the EKS Cluster security group
  • NodeGroup class:
    • .nodeSecurityGroupTags - A map of tags applied to the Worker Nodes security group
    • .cloudFormationTags - A map of tags applied to the CloudFormation Stack of Worker Nodes
    • .autoScalingGroupTags - A map of tags applied to the Worker NodeGroup ASG & Instances
• Also, set the default "Name" tag for each: eksClusterSecurityGroup, nodeSecurityGroup, and the Worker CloudFormation stack. The Worker ASG already had one set.

See the table for the:

• AWS resources under management by the cluster
• their new resource tag xTags name (if applicable)
• whether it has the default "Name" tag, and
• if it includes the .tags set for all resources under management by the cluster.

AWS Resource	Can be tagged?	Resource Tag Name	Has default 'Name' Tag?	Includes .tags
eksCluster	No
eksClusterIngressRule	No
eksClusterInternetEgressRule	No
eksClusterSecurityGroup	Yes	clusterSecurityGroupTags	Yes	Yes
eksExtApiServerClusterIngressRule	No
eksNodeClusterIngressRule	No
eksNodeIngressRule	No
eksNodeInternetEgressRule	No
eksRole	Yes	see (#119)	Not yet	Not yet
2x eksRolePolicyAttachment	No
instanceProfile	No
instanceRole	Yes	see (#119)	Not yet	Not yet
3x instanceRolePolicyAttachment	No
nodeLaunchConfiguration	No
nodeSecurityGroup	Yes	nodeSecurityGroupTags	Yes	Yes
autoScalingGroup & Instances	Yes	autoScalingGroupTags	Yes	Yes
cloudFormation Stack	Yes	cloudFormationTags	Yes	Yes

[lukehoban]

LGTM - just one question around Name.

[metral]

This PR was tested on an existing cluster using v0.18.3 and PASSED.