Do not expose management end points in production environment

Signed-off-by: Pekka Helenius <fincer89@hotmail.com>

bookstore/src/main/resources/application-prod.properties

@@ -12,4 +12,8 @@ security.book.count.max = 5
 # Enable sample data in production environment?
 # This is the same dataset than used in dev profile
 #
-db.sample.data.enabled  = true
+db.sample.data.enabled  = true
+
+# Do not expose statistics end points
+#
+management.endpoints.enabled-by-default   = false