tests/docker: updates to alpine package list

Cleanup the package lists by removing some entries that we don't need to
directly reference

  binutils: implied by the compiler toolchain
  coreutils: not required by QEMU build
  mesa-egl mesa-gbm: implied by mesa-dev
  ninja: alias for samurai package
  shadow: not required by QEMU build
  util-linux-dev: not directly required by QEMU build

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211215141949.3512719-16-berrange@redhat.com>
Message-Id: <20220105135009.1584676-16-alex.bennee@linaro.org>

tests/docker/dockerfiles/alpine.docker

@@ -8,9 +8,7 @@ RUN apk upgrade
 ENV PACKAGES \
 	alsa-lib-dev \
 	bash \
-	binutils \
 	ccache \
-	coreutils \
 	curl-dev \
 	g++ \
 	gcc \
@@ -33,22 +31,18 @@ ENV PACKAGES \
 	lzo-dev \
 	make \
 	mesa-dev \
-	mesa-egl \
-	mesa-gbm \
 	meson \
 	ncurses-dev \
-	ninja \
 	perl \
 	pulseaudio-dev \
 	python3 \
 	py3-sphinx \
 	py3-sphinx_rtd_theme \
-	shadow \
+	samurai \
 	snappy-dev \
 	spice-dev \
 	texinfo \
 	usbredir-dev \
-	util-linux-dev \
 	vde2-dev \
 	virglrenderer-dev \
 	vte3-dev \