fixed jwtservicetest not to enclude entire spring boot test

backend/src/test/resources/application-test.properties

@@ -0,0 +1,8 @@
+spring.datasource.url=jdbc:h2:mem:etfo-db;MODE=PostgreSQL;DATABASE_TO_LOWER=TRUE
+spring.datasource.driver-class-name=org.h2.Driver
+spring.datasource.username=test
+spring.datasource.password=test
+spring.jpa.hibernate.ddl-auto=create-drop
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+firebase.enabled=false
+jwt.secret=testkeynekikaojer123451231231231231231231231=