tree 66c47be3f80faed1acf79b3df29c3311a7eeef59
parent 43d3263ca782c5894b7bd7fc48bdd1e956e574a6
author Shawn McCarney <shawnmm@us.ibm.com> 1635621448 -0500
committer Shawn McCarney <shawnmm@us.ibm.com> 1635793345 +0000

regulators: Treat missing VPD keyword as empty

Modify the VPD service to return an empty value if the specified VPD
interface or keyword does not exist on the specified object path.

This condition can occur when the system is operating normally and
should not result in an error being logged.

Tested:
* Verified an empty value is returned if the VPD interface does not
  exist on the object path.
* Verified an empty value is returned if the VPD keyword does not exist
  on the object path.
* Verified correct value is returned if the VPD interface and keyword
  exist
* See complete test plan at
  https://gist.github.com/smccarney/47b167706da49c7d78c4df818040ae72

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: Iaa7c24f4e00ee17506fd5acfd0145c733fa0d57b