Add env vars for hipBLASLt

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.16%. Comparing base (19eb98d) to head (b69eea9). Report is 1 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #3545 +/- ## ======================================== Coverage 92.16% 92.16% ======================================== Files 512 512 Lines 21401 21401 ======================================== Hits 19724 19724 Misses 1677 1677 ```

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[ahsan-ca]

@causten This looks like it is ready to be merged. Thanks!