MNT: Make CI services always upload coverage.

This should fix codecov staying in pending state on failed builds
(Fixes Unidata#240)

.travis.yml

@@ -120,7 +120,7 @@ script:
       python setup.py test --addopts "$TEST_OPTS";
     fi
 
-after_success:
+after_script:
   - if [[ $TASK == "coverage" ]]; then
       pip install codecov codacy-coverage codeclimate-test-reporter;
       codecov -e TRAVIS_PYTHON_VERSION;

appveyor.yml

@@ -41,10 +41,10 @@ test_script:
     - cmd: set TEST_DATA_DIR=%APPVEYOR_BUILD_FOLDER%\\testdata
     - cmd: if %PYTHON_VERSION% == 2.7 find examples\notebooks -name "*.ipynb" -exec sed -i -e s/python3/python2/ {} ;
     - cmd: python setup.py test --addopts "--junitxml=tests.xml --flake8 --mpl --cov=metpy"
-    - ps: $wc = New-Object 'System.Net.WebClient'
-    - ps: $wc.UploadFile("https://ci.appveyor.com/api/testresults/junit/$($env:APPVEYOR_JOB_ID)", (Resolve-Path .\tests.xml))
     - cmd: find examples\notebooks\ -name "*.ipynb" -print0 | xargs -0 -n1 jupyter nbconvert --execute --ExecutePreprocessor.timeout=200 --ExecutePreprocessor.kernel_name=devel --inplace
 
-after_test:
+on_finish:
+    - ps: $wc = New-Object 'System.Net.WebClient'
+    - ps: $wc.UploadFile("https://ci.appveyor.com/api/testresults/junit/$($env:APPVEYOR_JOB_ID)", (Resolve-Path .\tests.xml))
     - cmd: pip install codecov
     - cmd: codecov -e PYTHON_VERSION PLATFORM