Updated GitLab CI pipeline to separate integration tests and functional tests

.gitlab-ci.yml

run_in_kubernetes.sh

run_local_tests.sh

run_unitary_tests.sh

src/common/database/api/context/service/Constraint.py

src/common/tools/service/ServiceCheckers.py

src/context/tests/test_unitary.py

src/device/tests/test_unitary.py

src/integration_tester/definitions.py

src/service/tests/test_unitary.py

src/tester_functional/.gitlab-ci.yml

src/tester_functional/Dockerfile

src/tester_functional/__init__.py

src/tester_functional/definitions.py

src/tester_functional/requirements.in

src/tester_functional/test_context_device_service.py

src/tester_integration/.gitlab-ci.yml

src/tester_integration/Dockerfile

src/tester_integration/__init__.py

src/tester_integration/definitions.py