Modifico el esquema de la base de datos del endpoint.

 On branch develop
 Changes to be committed:

	modified:   src/Infraestructura/clusterEndpoint/databases/ClusterEndpointDB.sql
Subo los métodos que hacían falta para implementar la web.

 On branch develop
 Changes to be committed:

	modified:   src/Infraestructura/clusterConnector/clusterConnector.py
	modified:   src/Infraestructura/clusterEndpoint/databases/clusterEndpointDB.py
	modified:   src/Infraestructura/clusterEndpoint/databases/tests/ClusterEndpointDBTest.sql
	modified:   src/Infraestructura/clusterEndpoint/databases/tests/clusterEndpointDBTests.py