Add environment list to CI (#3425)

Author: canyon289

.travis.yml

@@ -19,6 +19,7 @@ before_install:
 install:
   - . ./scripts/create_testenv.sh
   - pip install coveralls
+  - conda list && pip freeze
 
 env:
   - FLOATX='float32' TESTCMD="--durations=10 --ignore=pymc3/tests/test_examples.py --cov-append --ignore=pymc3/tests/test_distributions_random.py --ignore=pymc3/tests/test_variational_inference.py --ignore=pymc3/tests/test_shared.py --ignore=pymc3/tests/test_smc.py --ignore=pymc3/tests/test_updates.py --ignore=pymc3/tests/test_posteriors.py --ignore=pymc3/tests/test_sampling.py --ignore=pymc3/tests/test_parallel_sampling.py --ignore=pymc3/tests/test_dist_math.py --ignore=pymc3/tests/test_distribution_defaults.py --ignore=pymc3/tests/test_distributions_timeseries.py --ignore=pymc3/tests/test_random.py --ignore=pymc3/tests/test_gp.py"