This commit replaces `os.Setenv` with `t.Setenv` in tests. The
environment variable is automatically restored to its original value
when the test and all its subtests complete.
Reference: https://pkg.go.dev/testing#T.Setenv
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
In #212 these settings were updated and caused connectivity issues for
users in common environment configurations. The new changes are
aggressive (modern enforces TLS 1.3) and Mozilla indicates that
intermediate is an appropriate default. This will ensure better
compatibility for common deployments while still allowing the option to
use the strictest settings.
Document unintentional mismatched yaml key.
Fixes#269
