feat: added support for shared and non-shared volumes

[drkfmorton]

Closes #92
Signed-off-by: Kyle Morton [email protected]

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/edgex-examples/blob/main/.github/Contributing.md

PR Checklist

Please check if your PR fulfills the following requirements:

• I have added unit tests for the new feature or bug fix (if not, why?)
• I have fully tested (add details below) this the new feature or bug fix (if not, why?)

Testing Instructions

[bnevis-i]

LGTM. Tested 3 vectors:

• hostpath only
• rwo nonshared volumes and rwx shared volumes
• rwx for both
• (didn't test rwx nonshared and rwo shared since that is silly)