Integrate config/replace_mirrors_dunfell

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Commit: config@36f92d4e

setup:config: Replaced MIRRORS by PREMIRRORS

The PREMIRRORS are always queried before the main software sources.
This fixes errors, where a branch was removed from the main source.

BCS 746-001368

default.xml

@@ -24,7 +24,7 @@
     <project name="layers/meta-seconorth-machine"   revision="49657cd5cdc434b64cc4b026fecab2a59a68b049"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
     <project name="layers/meta-seconorth-distro"    revision="c8a78764a096ea6d81562fc5de37ad30843f4784"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
     <project name="layers/meta-seconorth-nogplv3"   revision="f8ddebabcd20d8f07ca8dd5e223d53423e921268"  remote="seco-ne"      path="sources/meta-seconorth-nogplv3"    />
-    <project name="config"                          revision="cf197ec58212aeaf35ca6052ea21d558dfca3488"  remote="seco-ne"      path=".conf"                              >
+    <project name="config"                          revision="36f92d4ec028340c8f146dcfb7d6197660e83cff"  remote="seco-ne"      path=".conf"                              >
         <linkfile dest="setup-environment" src="setup-environment" />
     </project>