jobs: stretch -> buster

Related: OS#5601
Change-Id: Ieb2bfc426563e48b9b8cd3910efbebdf09b41f46

jobs/gerrit-verifications.yml

@@ -40,7 +40,7 @@
               -w /build -i -u build \
               -v "$PWD:/build" \
               -v "$ARTIFACT_STORE:/artifact_store" \
-    docker_img: '$USER/debian-stretch-jenkins'
+    docker_img: '$USER/debian-buster-jenkins'
     docker_img_erlang: '$USER/debian-bullseye-erlang'
     timeout_cmd: '/usr/bin/timeout 30m'
     cmd: '{docker_run} {docker_img} {timeout_cmd} /build/contrib/jenkins.sh'

jobs/master-builds-dahdi.yml

@@ -65,7 +65,7 @@
             -e "KSRC=/linux" \
             -v "$PWD/dahdi-linux:/build" \
             -v "$PWD/linux:/linux" \
-            "$USER/debian-stretch-jenkins" \
+            "$USER/debian-buster-jenkins" \
             timeout 10m su build -c /build/contrib/jenkins.sh
 
     publishers:

jobs/master-builds.yml

@@ -41,7 +41,7 @@
               -v "$PWD:/build" \
               -v "$ARTIFACT_STORE:/artifact_store" \
               -v "$HOME/.ssh:/home/build/.ssh:ro" \
-    docker_img: '$USER/debian-stretch-jenkins'
+    docker_img: '$USER/debian-buster-jenkins'
     cmd: '{docker_run} {docker_img} /build/contrib/jenkins.sh'
     wrappers: []
     trigger: