This was meant to make amazon-ssm-agent work "out of the box" on non-NixOS
systems but the feature never really worked.
The problem is that amazon-ssm-agent looks for the files "amazon-ssm-agent.json"
and "seelog.xml" but the files in the package are named
"amazon-ssm-agent.json.template" and "seelog.xml.template". So even with
this overrideEtc = true it would not be able to find the config.
E.g. you'd get an error like
Error occurred fetching the seelog config file path: open /nix/store/pyfxjr0i0hszcj9b6fqly6344zf9zhcb-amazon-ssm-agent-3.3.484.0/etc/amazon/ssm/seelog.xml: no such file or directory
on startup.
Removing this parameter from the from the package doesn't break things as it didn't work in the first place.
Build regularly fails because of time dependent tests:
* Test name: TestSendStreamDataMessageWithStreamDataSequenceNumberMutexLocked
* File: agent/session/datachannel/datachannel_test.go#L259 (refs/tags/3.2.1705.0)
This test is a time-based unit test, and relies on `time.Sleep`.
We should disable it to get the ssm build working again.
