Bugfix: Setting and getting configuration values

- removed cache from global getter, because it was overriding the cache of
  the tenant specific getter
- changed Type of AuthName key, type of key was not important before the huge
  configuration refactoring
- fixed test conditions

Signed-off-by: Nonnenmacher Fabian <fabian.nonnenmacher@bosch-si.com>

hawkbit-repository/src/main/java/org/eclipse/hawkbit/repository/TenantConfigurationManagement.java

@@ -146,7 +146,6 @@ public class TenantConfigurationManagement implements EnvironmentAware {
      *             if the property cannot be converted to the given
      *             {@code propertyType}
      */
-    @Cacheable(value = "tenantConfiguration", key = "#configurationKey.getKeyName()")
     @PreAuthorize(value = SpringEvalExpressions.HAS_AUTH_TENANT_CONFIGURATION)
     public <T> T getGlobalConfigurationValue(final TenantConfigurationKey configurationKey, final Class<T> propertyType)
             throws TenantConfigurationValidatorException {