TST: add mocked job_id for google-cloud-bigquery 0.29

[tswast]

Closes #168.

[max-sixty]

I'm not sure how this could cause E ImportError: No module named pandas?
https://travis-ci.org/pydata/pandas-gbq/jobs/370804286

[tswast]

I think the remaining failure is a regression of conda/conda#5483 in how Conda handles namespace packages.

[tswast]

Sigh. Conda builds are still failing. I've tried removing everything that could be a bad interaction with conda and pip, but still no luck.

I think it really could be a regression in conda. To check that, I think the next step is to change

wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;

to a pinned version. If that fixes it, we should file a bug against conda.

[tswast]

I have no idea what's going on. Maybe there is something subtle about one of the newer versions of google-cloud-biquery that breaks on Conda? I guess we could try pinning that package.

[tswast]

The command "if [[ $PYTHON == '3.6' ]] && [[ "$PANDAS" == "MASTER" ]]; then nox -s test36master ; fi" exited with 0.
1.33s$ REQ="ci/requirements-${PYTHON}-${PANDAS}" ; if [ -f "$REQ.conda" ]; then pytest -v tests ; fi
============================= test session starts ==============================
platform linux -- Python 3.6.5, pytest-3.5.1, py-1.5.3, pluggy-0.6.0 -- /home/travis/miniconda/envs/test-environment/bin/python
cachedir: .pytest_cache
rootdir: /home/travis/build/pydata/pandas-gbq, inifile:
plugins: cov-2.5.1
collecting ... collected 29 items / 2 errors
==================================== ERRORS ====================================
___________________ ERROR collecting tests/unit/test_load.py ___________________
ImportError while importing test module '/home/travis/build/pydata/pandas-gbq/tests/unit/test_load.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
tests/unit/test_load.py:6: in <module>
    from pandas_gbq import load
pandas_gbq/load.py:4: in <module>
    from google.cloud import bigquery
../../../miniconda/envs/test-environment/lib/python3.6/site-packages/google_cloud_bigquery-1.1.0-py3.6.egg/google/cloud/bigquery/__init__.py:34: in <module>
    from google.cloud.bigquery._helpers import DEFAULT_RETRY
../../../miniconda/envs/test-environment/lib/python3.6/site-packages/google_cloud_bigquery-1.1.0-py3.6.egg/google/cloud/bigquery/_helpers.py:20: in <module>
    from google.api_core import retry
E   ModuleNotFoundError: No module named 'google.api_core'
__________________ ERROR collecting tests/unit/test_query.py ___________________
ImportError while importing test module '/home/travis/build/pydata/pandas-gbq/tests/unit/test_query.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
tests/unit/test_query.py:9: in <module>
    from pandas_gbq import query
pandas_gbq/query.py:3: in <module>
    from google.cloud import bigquery
../../../miniconda/envs/test-environment/lib/python3.6/site-packages/google_cloud_bigquery-1.1.0-py3.6.egg/google/cloud/bigquery/__init__.py:34: in <module>
    from google.cloud.bigquery._helpers import DEFAULT_RETRY
../../../miniconda/envs/test-environment/lib/python3.6/site-packages/google_cloud_bigquery-1.1.0-py3.6.egg/google/cloud/bigquery/_helpers.py:20: in <module>
    from google.api_core import retry
E   ModuleNotFoundError: No module named 'google.api_core'
!!!!!!!!!!!!!!!!!!! Interrupted: 2 errors during collection !!!!!!!!!!!!!!!!!!!!
=========================== 2 error in 0.64 seconds ============================

[tswast]

Whew, pinning google-cloud-bigquery fixed the conda build. I'll merge this so master gets green again.

I filed conda-forge/google-cloud-bigquery-feedstock#10 to track it, but not sure when I can get to it to investigate further.

[max-sixty]

Thanks a lot @tswast !