test/docker/dockerfiles: Add missing packages for acceptance tests

Some of the "check-acceptance" tests are still skipped in the CI
since the docker images do not provide the necessary packages, e.g.
the netcat binary. Add them to get more test coverage.

Message-Id: <20201023073351.251332-5-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/docker/dockerfiles/centos8.docker

@@ -18,6 +18,7 @@ ENV PACKAGES \
     lzo-devel \
     make \
     mesa-libEGL-devel \
+    nmap-ncat \
     nettle-devel \
     ninja-build \
     perl-Test-Harness \

tests/docker/dockerfiles/debian-amd64.docker

@@ -23,6 +23,9 @@ RUN apt update && \
         libsnappy-dev \
         libvte-dev \
         netcat-openbsd \
+        openssh-client \
+        python3-numpy \
+        python3-opencv \
         python3-venv
 
 # virgl

tests/docker/dockerfiles/fedora.docker

@@ -73,6 +73,7 @@ ENV PACKAGES \
     mingw64-pixman \
     mingw64-pkg-config \
     mingw64-SDL2 \
+    nmap-ncat \
     ncurses-devel \
     nettle-devel \
     ninja-build \

tests/docker/dockerfiles/ubuntu2004.docker

@@ -47,6 +47,7 @@ ENV PACKAGES flex bison \
     libxen-dev \
     libzstd-dev \
     make \
+    netcat-openbsd \
     ninja-build \
     python3-numpy \
     python3-opencv \