tree 9f4b99e5eaa953bc9931fce99ac0ca5481de33ed
parent 3894ce7db0d1ce37246210100e996de3e8445554
author Lei YU <yulei.sh@bytedance.com> 1616050610 +0800
committer Lei YU <yulei.sh@bytedance.com> 1619501512 +0800

Get ignored interfaces from environment

Add several functions to get a comma separated string from environment,
and parse the string into a set.

Tested: Verify the unit tests passes.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: I0dd7270d9882cf6fa3ce73d8eac516ae42c61fc0