[processing] move "Split RGB bands" algorithm inside "Raster tools"

alexbruy · nyalldawson · commit f01b9e4c88c0 · 2019-05-23T10:37:21.000+10:00
group to maintain consistency (fix #21849)
diff --git a/python/plugins/processing/algs/saga/SplitRGBBands.py b/python/plugins/processing/algs/saga/SplitRGBBands.py
@@ -60,7 +60,10 @@ def displayName(self):
         return self.tr('Split RGB bands')
 
     def group(self):
-        return self.tr('Image tools')
+        return self.tr('Raster tools')
+
+    def groupId(self):
+        return 'rastertools'
 
     def processAlgorithm(self, parameters, context, feedback):
         # TODO: check correct num of bands
