[Build] Support j2 template for debian sources for docker ptf (#13198)

Change to use the sources.list from the file generated from the j2 template

dockers/docker-ptf/Dockerfile.j2

@@ -14,14 +14,14 @@ WORKDIR /root
 
 MAINTAINER Pavel Shirshov
 
-RUN echo "deb [arch=amd64] http://debian-archive.trafficmanager.net/debian buster-backports main" >> /etc/apt/sources.list
+COPY ["sources.list.{{ CONFIGURED_ARCH }}", "/etc/apt/sources.list"]
+
 ## Make apt-get non-interactive
 ENV DEBIAN_FRONTEND=noninteractive
 
 ## Set the apt source, update package cache and install necessary packages
 ## TODO: Clean up this step
-RUN sed --in-place 's/httpredir.debian.org/debian-archive.trafficmanager.net/' /etc/apt/sources.list \
-    && apt-get update          \
+RUN apt-get update          \
     && apt-get upgrade -y   \
     && apt-get dist-upgrade -y  \
     && apt-get install -y   \

scripts/prepare_docker_buildinfo.sh

@@ -22,7 +22,7 @@ if [ -z "$DISTRO" ]; then
     [ -z "$DISTRO" ] && DISTRO=jessie
 fi
 
-if [[ "$IMAGENAME" == docker-base-* ]]; then
+if [[ "$IMAGENAME" == docker-base-* ]] || [[ "$IMAGENAME" == docker-ptf ]]; then
     scripts/build_mirror_config.sh ${DOCKERFILE_PATH} $ARCH $DISTRO
 fi