Refactor CI tests set up

Author: Daniel Jimenez

.travis.yml

@@ -12,13 +12,11 @@ before_install:
   # Requirement for 'test-local-deployment'
   - pip install --user awscli
   - export PATH=$PATH:$HOME/.local/bin
-before_script:
-  - _script/start-pg
 gobuild_args: -a -tags netgo -ldflags '-w'
 go_import_path: github.com/adevinta/vulnerability-db
 script:
   - go install ./...
-  - go test -v -tags integration $(go list ./... | grep -v /vendor/) ./test
+  - _script/test
 after_success:
   - bash -c 'source <(curl -s https://raw.githubusercontent.com/adevinta/vulcan-cicd/master/docker.sh)'
   - cd local_deployment