Move CollegeProjection to a more-high-level .given, so that it could be properly re-used.

Author: armiol

…tore/tenant/given/CollegeProjection.java …e/datastore/given/CollegeProjection.javadatastore/src/test/java/io/spine/server/storage/datastore/tenant/given/CollegeProjection.java renamed to datastore/src/test/java/io/spine/server/storage/datastore/given/CollegeProjection.java datastore/src/test/java/io/spine/server/storage/datastore/tenant/given/CollegeProjection.java renamed to datastore/src/test/java/io/spine/server/storage/datastore/given/CollegeProjection.java

@@ -24,7 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-package io.spine.server.storage.datastore.tenant.given;
+package io.spine.server.storage.datastore.given;
 
 import io.spine.server.projection.Projection;
 import io.spine.test.datastore.College;