CI: add poky-altcfg

Add poky-altcfg to give us coverage for systemd (and the other things
that it exercises).

Signed-off-by: Jon Mason <jon.mason@arm.com>

.gitlab-ci.yml

@@ -111,7 +111,7 @@ update-repos:
 # Build stage, the actual build jobs
 #
 # Available options for building are
-#  DISTRO: [poky, poky-tiny]
+#  DISTRO: [poky, poky-altcfg, poky-tiny]
 #  KERNEL: [linux-yocto, linux-yocto-dev, linux-yocto-rt]
 #  TOOLCHAINS: [gcc, clang, external-gccarm]
 #  TCLIBC: [glibc, musl]
@@ -333,6 +333,8 @@ sbsa-ref:
       - KERNEL: [linux-yocto, linux-yocto-rt]
         TOOLCHAINS: [gcc, clang]
         TESTING: testimage
+      - DISTRO: poky-altcfg
+        TESTING: testimage
       - KERNEL: linux-yocto-dev
         TESTING: testimage
 

ci/poky-altcfg.yml

@@ -0,0 +1,4 @@
+header:
+  version: 14
+
+distro: poky-altcfg