Check for env variables for root cmd persistent flags #2143
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We were checking for environment variables for subcommands of
skaffold
, but not the global flags that directly apply to theskaffold
root cmd.
This should allow us to also specify
SKAFFOLD_FORCE_COLORS
as an envvariable, fixing #2139.
I wasn't sure how to unit test this without changing the environment
variable locally, and I didn't want to risk messing up anyone's
configuration. However, I tested locally and the env variable seems to
be working now.