Added coldfront patch to signal when allocation change request is created

Dockerfile

@@ -25,11 +25,13 @@ RUN pip3 install -r /tmp/requirements.txt
 COPY patches/01_add_api_urls.patch /opt/venv/lib/python3.9/site-packages/
 COPY patches/02_fix_allocation_denied_revoked_PR596.patch /opt/venv/lib/python3.9/site-packages/
 COPY patches/03_add_active_needs_renewal_status.patch /opt/venv/lib/python3.9/site-packages/
+COPY patches/04_add_allocation_change_request_created_signal.patch /opt/venv/lib/python3.9/site-packages/
 
 RUN cd /opt/venv/lib/python3.9/site-packages && \
     patch -p1 < 01_add_api_urls.patch && \
     patch -p1 < 02_fix_allocation_denied_revoked_PR596.patch && \
-    patch -p1 < 03_add_active_needs_renewal_status.patch
+    patch -p1 < 03_add_active_needs_renewal_status.patch && \
+    patch -p1 < 04_add_allocation_change_request_created_signal.patch
 
 # Final Image
 FROM python:3.9-slim-bullseye

patches/04_add_allocation_change_request_created_signal.patch

@@ -0,0 +1,36 @@
+diff --git a/coldfront/core/allocation/signals.py b/coldfront/core/allocation/signals.py
+index 1c078f0..51277b1 100644
+--- a/coldfront/core/allocation/signals.py
++++ b/coldfront/core/allocation/signals.py
+@@ -14,3 +14,6 @@ allocation_remove_user = django.dispatch.Signal()
+
+ allocation_change_approved = django.dispatch.Signal()
+     #providing_args=["allocation_pk", "allocation_change_pk"]
++
++allocation_change_created = django.dispatch.Signal()
++    #providing_args=["allocation_pk", "allocation_change_pk"]
+diff --git a/coldfront/core/allocation/views.py b/coldfront/core/allocation/views.py
+index ec129fc..fa9b39c 100644
+--- a/coldfront/core/allocation/views.py
++++ b/coldfront/core/allocation/views.py
+@@ -53,6 +53,7 @@ from coldfront.core.allocation.signals import (allocation_new,
+                                                allocation_activate_user,
+                                                allocation_disable,
+                                                allocation_remove_user,
++                                               allocation_change_created,
+                                                allocation_change_approved,)
+ from coldfront.core.allocation.utils import (generate_guauge_data_from_usage,
+                                              get_user_resources)
+@@ -1811,6 +1812,12 @@ class AllocationChangeView(LoginRequiredMixin, UserPassesTestMixin, FormView):
+
+         messages.success(request, 'Allocation change request successfully submitted.')
+
++        allocation_change_created.send(
++            sender=self.__class__,
++            allocation_pk=allocation_obj.pk,
++            allocation_change_pk=allocation_change_request_obj.pk,)
++        
++
+         send_allocation_admin_email(allocation_obj,
+                                     'New Allocation Change Request',
+                                     'email/new_allocation_change_request.txt',