slapos_pdm: add method to accept/reject upgrade decision from jio

master/bt5/slapos_pdm/SkinTemplateItem/portal_skins/slapos_pdm/UpgradeDecision_requestChangeState.py

+upgrade_decision = context
+state = upgrade_decision.getSimulationState()
+
+message = "Transition from state %s to %s is not permitted" % (state, requested_state)
+if requested_state == "started":
+  if state == "confirmed":
+    message = "This Upgrade Decision has been requested, it will be processed in few minutes."
+    upgrade_decision.start()
+elif requested_state == "rejected":
+  if state in ['confirmed', 'draft', 'planned']:
+    message = "Thanks Upgrade Decision has been rejected Successfully (You cannot use it anymore)."
+    upgrade_decision.reject()
+else:
+  message = "Unknow Upgrade Decision state %r" % requested_state
+
+return context.Base_translateString(message)

master/bt5/slapos_pdm/SkinTemplateItem/portal_skins/slapos_pdm/UpgradeDecision_requestChangeState.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>Script_magic</string> </key>
+            <value> <int>3</int> </value>
+        </item>
+        <item>
+            <key> <string>_bind_names</string> </key>
+            <value>
+              <object>
+                <klass>
+                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
+                </klass>
+                <tuple/>
+                <state>
+                  <dictionary>
+                    <item>
+                        <key> <string>_asgns</string> </key>
+                        <value>
+                          <dictionary>
+                            <item>
+                                <key> <string>name_container</string> </key>
+                                <value> <string>container</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_context</string> </key>
+                                <value> <string>context</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_m_self</string> </key>
+                                <value> <string>script</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_subpath</string> </key>
+                                <value> <string>traverse_subpath</string> </value>
+                            </item>
+                          </dictionary>
+                        </value>
+                    </item>
+                  </dictionary>
+                </state>
+              </object>
+            </value>
+        </item>
+        <item>
+            <key> <string>_params</string> </key>
+            <value> <string>requested_state</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>UpgradeDecision_requestChangeState</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>