Add config for R4.0 -> R4.1 transitional packages build

QubesOS/qubes-issues#5685

R4.1/qubes-os-r4.1-dom0-update-from-r4.0.conf

@@ -0,0 +1,47 @@
+# vim: ft=make ts=4 sw=4
+
+# Configuration for qubes build server: Qubes R4.1 - transitional dom0 packages for upgrading from R4.0
+
+GIT_BASEURL ?= https://github.com
+GIT_PREFIX ?= QubesOS/qubes-
+NO_SIGN ?=
+
+BACKEND_VMM=xen
+
+DIST_DOM0 ?= fc25
+DISTS_VM ?=
+
+COMPONENTS ?= \
+			  linux-dom0-update \
+			  qubes-release \
+			  linux-yum \
+			  builder-rpm \
+			  buider
+
+include example-configs/qubes-os-r4.1.conf
+
+BUILDER_PLUGINS += linux-yum
+
+ifeq "$(origin COMPONENTS)" "file"
+COMPONENTS += release-configs
+endif
+BUILDER_PLUGINS += release-configs
+BRANCH_release_configs = master
+
+BRANCH_linux_dom0_update = release4.0-to-4.1-upgrade
+
+## Commands signing keys access
+# marmarek
+ALLOWED_DISTS_17B7CC1986BD3D28C41475B6846D6B709C6E2E7F := $(DISTS_VM) dom0
+# simon
+ALLOWED_DISTS_274E12AB03F2FE293765FC06DA0434BC706E1FCF := $(DISTS_VM) dom0
+
+BUILD_TIMEOUT = 10800
+
+USE_DIST_BUILD_TOOLS = 1
+
+GNUPG = qubes-gpg-client-wrapper
+SIGN_KEY = 5817A43B283DE5A9181A522E1848792F9E2795E9
+LINUX_REPO_BASEDIR ?= $(SRC_DIR)/linux-yum/r4.1
+AUTOMATIC_UPLOAD = 1
+include $(HOME)/builder-github.conf