tree a0b8db10983b2ebb438a15360ce3791828db3573
parent 92dd433b4d51c3d2f4d9e2df44a65233fa7fe939
author Adriana Kobylak <anoo@us.ibm.com> 1659622386 -0500
committer Patrick Williams <patrick@stwcx.xyz> 1659654358 +0000

image_version: Simplify function to get os-release value

The logic to get an os-release value was duplicated. Move this logic to
a single function to remove the duplication. This can also help to avoid
further duplication if additional values need to be parsed.

Tested: Verified the contents of the MANIFEST file were the same after
this change.

Change-Id: Iacdb2c7e644103d76b73f32b15a089d352f40001
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>