osbuilder: Remove debian as a rootfs

Currently we do not have debian as part of the kata CI as we
do not have a mantainer, this PR removes debian as a supported
rootfs in order to have only the distros that we are supporting
and mantainining.

Fixes #3153

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

tools/osbuilder/rootfs-builder/debian/Dockerfile-aarch64.in

@@ -1,34 +0,0 @@
-#
-# Copyright (c) 2020 ARM Limited
-#
-# SPDX-License-Identifier: Apache-2.0
-
-ARG IMAGE_REGISTRY=docker.io
-# NOTE: OS_VERSION is set according to config.sh
-FROM ${IMAGE_REGISTRY}/debian:@OS_VERSION@
-
-# RUN commands
-RUN apt-get update && apt-get install -y \
-    autoconf \
-    automake \
-    binutils \
-    build-essential \
-    chrony \
-    coreutils \
-    curl \
-    debianutils \
-    debootstrap \
-    g++ \
-    gcc \
-    git \
-    libc-dev \
-    libstdc++-6-dev \
-    m4 \
-    make \
-    sed \
-    systemd \
-    tar \
-    vim
-# This will install the proper packages to build Kata components
-@INSTALL_MUSL@
-@INSTALL_RUST@

tools/osbuilder/rootfs-builder/debian/Dockerfile.in

@@ -1,40 +0,0 @@
-#
-# Copyright (c) 2018 SUSE
-#
-# SPDX-License-Identifier: Apache-2.0
-
-ARG IMAGE_REGISTRY=docker.io
-# NOTE: OS_VERSION is set according to config.sh
-FROM ${IMAGE_REGISTRY}/debian:@OS_VERSION@
-
-# RUN commands
-RUN apt-get update && apt-get --no-install-recommends install -y \
-    apt-utils \
-    autoconf \
-    automake \
-    binutils \
-    build-essential \
-    ca-certificates \
-    chrony \
-    coreutils \
-    curl \
-    debianutils \
-    debootstrap \
-    g++ \
-    gcc \
-    git \
-    libc-dev \
-    libstdc++-6-dev \
-    m4 \
-    make \
-    musl \
-    musl-dev \
-    musl-tools \
-    sed \
-    systemd \
-    tar \
-    vim \
-    wget
-
-# This will install the proper packages to build Kata components
-@INSTALL_RUST@

tools/osbuilder/rootfs-builder/debian/config.sh

@@ -1,20 +0,0 @@
-#
-# Copyright (c) 2018 SUSE
-#
-# SPDX-License-Identifier: Apache-2.0
-
-OS_VERSION=${OS_VERSION:-9.5}
-
-# Set OS_NAME to the desired debian "codename"
-OS_NAME=${OS_NAME:-"stretch"}
-
-PACKAGES="systemd coreutils init chrony kmod"
-
-# NOTE: Re-using ubuntu rootfs configuration, see 'ubuntu' folder for full content.
-source $script_dir/ubuntu/$CONFIG_SH
-
-# Init process must be one of {systemd,kata-agent}
-INIT_PROCESS=systemd
-# List of zero or more architectures to exclude from build,
-# as reported by  `uname -m`
-ARCH_EXCLUDE_LIST=()

tools/osbuilder/rootfs-builder/debian/rootfs_lib.sh

@@ -1,7 +0,0 @@
-#
-# Copyright (c) 2018 SUSE
-#
-# SPDX-License-Identifier: Apache-2.0
-
-# NOTE: Re-using ubuntu rootfs lib, see 'ubuntu' folder for details.
-source ${script_dir}/ubuntu/$LIB_SH

tools/osbuilder/rootfs-builder/rootfs.sh

@@ -193,7 +193,7 @@ docker_extra_args()
 		args+=" -v ${gentoo_local_portage_dir}:/usr/portage/packages"
 		args+=" --volumes-from ${gentoo_portage_container}"
 		;;
-        debian | ubuntu | suse)
+	ubuntu | suse)
 		source /etc/os-release
 
 		case "$ID" in
@@ -519,8 +519,8 @@ EOT
 			chrony_conf_file="${ROOTFS_DIR}/etc/chrony/chrony.conf"
 			chrony_systemd_service="${ROOTFS_DIR}/lib/systemd/system/chronyd.service"
 			;;
-		"ubuntu" | "debian")
-			echo "I am ubuntu or debian"
+		"ubuntu")
+			echo "I am ubuntu"
 			chrony_conf_file="${ROOTFS_DIR}/etc/chrony/chrony.conf"
 			chrony_systemd_service="${ROOTFS_DIR}/lib/systemd/system/chrony.service"
 			;;