E2E: Add additional error handling for import status waiters

What does this MR do and why?

This change is aimed primarily to make the long running large import tests of import-metrics project more resilient. These tests can run several hours or in some cases even days during which some intermittent network failures can occur while polling for import status.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.