threshold for Snapshot only have to be positive;

Signed-off-by: Stefan Maute <stefan.maute@bosch.io>

internal/utils/config/src/test/resources/test.conf

@@ -5,7 +5,7 @@ ditto {
 
   concierge {
     caches {
-      ask-timeout = 0s
+      ask-timeout = 10s
 
       id {
         maximum-size = 80000

internal/utils/persistence/src/main/java/org/eclipse/ditto/internal/utils/persistence/mongo/config/DefaultSnapshotConfig.java

@@ -35,7 +35,7 @@ public final class DefaultSnapshotConfig implements SnapshotConfig {
 
     private DefaultSnapshotConfig(final ScopedConfig config) {
         interval = config.getNonNegativeAndNonZeroDurationOrThrow(SnapshotConfigValue.INTERVAL);
-        threshold = config.getNonNegativeLongOrThrow((SnapshotConfigValue.THRESHOLD));
+        threshold = config.getPositiveLongOrThrow((SnapshotConfigValue.THRESHOLD));
     }
 
     /**

internal/utils/persistence/src/test/java/org/eclipse/ditto/internal/utils/persistence/mongo/config/DefaultSnapshotConfigTest.java

@@ -76,6 +76,6 @@ public void underTestReturnsValuesOfConfigFile() {
                 .isEqualTo(Duration.ofDays(100L));
         softly.assertThat(underTest.getThreshold())
                 .as(SnapshotConfig.SnapshotConfigValue.THRESHOLD.getConfigPath())
-                .isEqualTo(1);
+                .isEqualTo(2);
     }
 }

internal/utils/persistence/src/test/resources/snapshot-test.conf

@@ -1,4 +1,4 @@
 snapshot {
   interval = 100d
-  threshold = 1
+  threshold = 2
 }