r/kubernetes_pod: Add timeout to pod resource

[appilon]

Fix #91

Configurable timeouts for Create and Delete (plumbing was already in place). Let me know if we want to support more timeouts (read, update) or just address the ones described in the issue.

[catsby]

Unfortunately the Timeouts isn't automagical, you need to reference them in the code spots that should use them

[catsby]

These need to be referenced in the code that would use them.

See:

• https://github.com/terraform-providers/terraform-provider-aws/blob/d5d8511e754406d10ecd108bb892e2f3296814d3/aws/resource_aws_db_instance.go#L528-L541

• https://github.com/terraform-providers/terraform-provider-aws/blob/d5d8511e754406d10ecd108bb892e2f3296814d3/aws/resource_aws_rds_cluster_instance.go#L474-L490

[appilon]

womp womp. Thank you for the links I was wondering how it worked.

[radeksimko]