infra: fix PR builds to run on changes to their own buildspecs (#1319)

Author: knakad

buildspec-localmodetests.yml

@@ -11,5 +11,5 @@ phases:
 
       # local mode tests
       - start_time=`date +%s`
-      - execute-command-if-has-matching-changes "tox -e py27,py36 -- tests/integ -m local_mode --durations 50" "tests/" "src/*.py" "setup.py" "setup.cfg" "buildspec.yml"
+      - execute-command-if-has-matching-changes "tox -e py27,py36 -- tests/integ -m local_mode --durations 50" "tests/" "src/*.py" "setup.py" "setup.cfg" "buildspec-localmodetests.yml"
       - ./ci-scripts/displaytime.sh 'py27,py36 local mode' $start_time

buildspec-notebooktests.yml

@@ -6,5 +6,5 @@ phases:
       # run notebook test
       - echo "running notebook test"
       - start_time=`date +%s`
-      - execute-command-if-has-matching-changes "./tests/scripts/run-notebook-test.sh" "src/*.py" "setup.py" "setup.cfg" "tests/scripts/run-notebook-test.sh"
+      - execute-command-if-has-matching-changes "./tests/scripts/run-notebook-test.sh" "src/*.py" "setup.py" "setup.cfg" "tests/scripts/run-notebook-test.sh" "buildspec-notebooktests.yml"
       - ./ci-scripts/displaytime.sh 'notebook test' $start_time