Allow to set hostname and instance-id when EC2 metadata is blocked #54
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Description of changes:
On my EKS workers I restricted the access to Amazon EC2 instance metadata service and thus the end point http://169.254.169.254 isn't reachable.
A possible workaround is to start xray-daemon with
--local-mode, but since xray need it for just 3 fields (region, hostname and instance-id), I think it's OK to set those via environment variables as well.By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.