moving to python -m pytest to solve conda test issue

Author: paolap

conda/run_test.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-py.test
+python -m pytest

conda/run_test_coverage.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 pip install coverage pytest-cov
-py.test --cov=mopper --cov-report xml:/tmp/artefacts/tests/pytest/coverage.xml --junit-xml /tmp/artefacts/tests/pytest/results.xml
-py.test --cov=mopdb --cov-report xml:/tmp/artefacts/tests/pytest/coverage.xml --junit-xml /tmp/artefacts/tests/pytest/results.xml
+python -m pytest --cov=mopper --cov-report xml:/tmp/artefacts/tests/pytest/coverage.xml --junit-xml /tmp/artefacts/tests/pytest/results.xml
+python -m pytest --cov=mopdb --cov-report xml:/tmp/artefacts/tests/pytest/coverage.xml --junit-xml /tmp/artefacts/tests/pytest/results.xml