Replace "pip freeze -l" with "conda list" in the tox commands, since …

…the former largely prints arcane paths rather than versions in the Anaconda env.

tox.ini

@@ -51,9 +51,9 @@ commands =
     which python
     which pip
     which pytest
-    pip freeze -l
     pip install git+https://github.com/astropy/astroscrappy.git@1.1.0#egg=astroscrappy
     pip install git+https://github.com/GeminiDRSoftware/AstroFaker#egg=AstroFaker
+    conda list
     unit: python -m coverage run --rcfile={toxinidir}/.coveragerc -m pytest -v --dragons-remote-data --durations=20 -m "not integration_test and not gmosls and not f2 and not f2ls and not f2image and not gsaoi and not gsaoiimage and not niri and not nirils and not niriimage and not gnirs and not gnirsls and not gnirsimage and not wavecal and not regression and not slow" {posargs:astrodata geminidr gemini_instruments gempy recipe_system}
     integ: python -m coverage run --rcfile={toxinidir}/.coveragerc -m pytest -v --dragons-remote-data --durations=20 -m "integration_test and not slow" {posargs:astrodata geminidr gemini_instruments gempy recipe_system}
     gmosls: python -m coverage run --rcfile={toxinidir}/.coveragerc -m pytest -v --dragons-remote-data --durations=20 -m "gmosls and not slow and not wavecal" {posargs:astrodata geminidr gemini_instruments gempy recipe_system}