Adding shell script and workflow file

Workflow file runs the shell script.

Shell script sets up emission environment and runs TestOverpass.py.

.github/workflows/test-overpass.yml

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+name: overpass-test
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  push:
+    branches:
+      - overpass
+  # schedule:
+
+  #   # Run every Sunday at 6:05 am
+  #   - cron:  '5 6 * * 0'
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    # Tests runner is functional
+    - name: Workflow test
+      run: echo Good morning!
+
+      # Runs TestOverpass.py to check for API functionality
+    - name: Test Overpass
+      env:
+        OVERPASS_KEY: '${{ secrets.OVERPASS_API }}'
+      run: ../../emission/individual_tests/setup_overpass_tests.sh
+

emission/individual_tests/setup_overpass_tests.sh

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+#Set up the testing environment
+# Using an automated install 
+cd /src/e-mission-server
+
+#set database URL using environment variable
+echo ${DB_HOST}
+if [ -z ${DB_HOST} ] ; then
+    local_host=`hostname -i`
+    sed "s_localhost_${local_host}_" conf/storage/db.conf.sample > conf/storage/db.conf
+else
+    sed "s_localhost_${DB_HOST}_" conf/storage/db.conf.sample > conf/storage/db.conf
+fi
+cat conf/storage/db.conf
+
+echo "Setting up conda..."
+source setup/setup_conda.sh Linux-x86_64
+
+echo "Setting up the test environment..."
+source setup/setup_tests.sh
+
+echo "Running tests..."
+source setup/activate_tests.sh
+
+echo "Adding permissions for the runIntegrationTests.sh script"
+chmod +x runIntegrationTests.sh
+echo "Permissions added for the runIntegrationTests.sh script"
+
+set -e
+PYTHONPATH=. python -m unittest emission/individual_tests/TestOverpass.py