Bulk merge from repo:ci-managment

Change-Id: I7b733b43699b47deaaec2fe433987619b6928158
diff --git a/makefiles/release/voltha-versions.mk b/makefiles/release/voltha-versions.mk
new file mode 100644
index 0000000..a6ab7b6
--- /dev/null
+++ b/makefiles/release/voltha-versions.mk
@@ -0,0 +1,44 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# -----------------------------------------------------------------------
+# Intent: Helper makefile target used to setup for a release
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+voltha-versions += master
+voltha-versions += voltha-2.12
+voltha-versions += voltha-2.11
+voltha-versions += voltha-2.8
+voltha-versions += playground
+
+# VOLTHA: release
+#   active : $(words 0,$(voltha-versions))
+#     next : $(words 1,$(voltha-versions))
+#     last : $(words 2,$(voltha-versions))
+
+# fatal to make help (param is null)
+voltha-version ?= $(error $(MAKE) voltha-verison=voltha-x.yy is required)\
+
+voltha-release-this := $(word 1,$(voltha-versions)) 
+voltha-release-last := $(word 2,$(voltha-versions))
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]