the strategy was not propagated in the pytest

[jmitrevs]

Description

A bug fix for the test_cnn_mnist_qkeras.py pytest: the strategy is ignored

Note: Please delete options that are not relevant.

• [x] Bug fix (non-breaking change that fixes an issue)

Tests

A fix in a test

Checklist

• [x] I have read the guidelines for contributing.
• [x] My changes generate no new warnings.