Rollout retry (#1454)

* Rollout retry mechanism initial commit

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

* Remove test target fields for filter query

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

* minor refactoring

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

* Fixes after review

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

* more refactoring after review

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

* skip compatibility check of dstype for retried rollout

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

* remove dsType from javadoc

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

---------

Signed-off-by: Stanislav Trailov <Stanislav.Trailov@bosch.io>

hawkbit-repository/hawkbit-repository-core/src/main/java/org/eclipse/hawkbit/repository/RolloutHelper.java

@@ -229,6 +229,9 @@ public final class RolloutHelper {
         if (StringUtils.isEmpty(group.getTargetFilterQuery())) {
             return baseFilter;
         }
+        if (isRolloutRetried(baseFilter)) {
+            return baseFilter;
+        }
         return concatAndTargetFilters(baseFilter, group.getTargetFilterQuery());
     }
 
@@ -253,4 +256,12 @@ public final class RolloutHelper {
                     + rollout.getStatus().name().toLowerCase());
         }
     }
+
+    public static boolean isRolloutRetried(final String targetFilter) {
+        return targetFilter.contains("failedrollout");
+    }
+
+    public static String getIdFromRetriedTargetFilter(final String targetFilter) {
+        return targetFilter.substring("failedrollout==".length());
+    }
 }