Improve @Value properties (#2352)

Implement recommendation from https://docs.spring.io/spring-boot/reference/features/external-config.html to use kebab case for @Values:

If you do want to use @Value, we recommend that you refer to property names using their canonical form (kebab-case using only lowercase letters). This will allow Spring Boot to use the same logic as it does when relaxed binding @ConfigurationProperties.

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

hawkbit-repository/hawkbit-repository-jpa-hibernate/src/main/java/org/eclipse/hawkbit/repository/jpa/JpaConfiguration.java

@@ -40,7 +40,7 @@ public class JpaConfiguration {
 
     protected JpaConfiguration(
             final TenantAware.TenantResolver tenantResolver,
-            @Value("${hibernate.enable_lazy_load_no_trans:true}") final boolean enableLazyLoadNoTrans) {
+            @Value("${hibernate.enable-lazy-load-no-trans:true}") final boolean enableLazyLoadNoTrans) {
         tenantIdentifier = new TenantIdentifier(tenantResolver);
         this.enableLazyLoadNoTrans = enableLazyLoadNoTrans;
     }