move some constraints from slapos_upgrader to slapos_erp5

master/bt5/slapos_erp5/SkinTemplateItem/portal_skins/slapos_erp5.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Folder" module="OFS.Folder"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_local_properties</string> </key>
+            <value>
+              <tuple>
+                <dictionary>
+                  <item>
+                      <key> <string>id</string> </key>
+                      <value> <string>business_template_skin_layer_priority</string> </value>
+                  </item>
+                  <item>
+                      <key> <string>type</string> </key>
+                      <value> <string>float</string> </value>
+                  </item>
+                </dictionary>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_objects</string> </key>
+            <value>
+              <tuple/>
+            </value>
+        </item>
+        <item>
+            <key> <string>business_template_skin_layer_priority</string> </key>
+            <value> <float>90.0</float> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>slapos_erp5</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string></string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

master/bt5/slapos_erp5/bt/template_skin_id_list

 slapos_administration
-slapos_core
\ No newline at end of file
+slapos_core
+slapos_erp5
\ No newline at end of file