Add FMF test metadata and scripts

Copy and adjust the browser.sh and run-test.sh scripts from
cockpit-podman, which we have used in Fedora/RHEL dist-git gating and
packit tests for a while.

test/browser/browser.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+set -eux
+
+TESTS="$(realpath $(dirname "$0"))"
+if [ -d source ]; then
+    # path for standard-test-source
+    SOURCE="$(pwd)/source"
+else
+    SOURCE="$(realpath $TESTS/../..)"
+fi
+LOGS="$(pwd)/logs"
+mkdir -p "$LOGS"
+chmod a+w "$LOGS"
+
+# install browser; on RHEL, use chromium from epel
+# HACK: chromium-headless ought to be enough, but version 88 has a crash: https://bugs.chromium.org/p/chromium/issues/detail?id=1170634
+if ! rpm -q chromium; then
+    if grep -q 'ID=.*rhel' /etc/os-release; then
+        dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
+        dnf config-manager --enable epel
+    fi
+    dnf install -y chromium
+fi
+
+# create user account for logging in
+if ! id admin 2>/dev/null; then
+    useradd -c Administrator -G wheel admin
+    echo admin:foobar | chpasswd
+fi
+
+# set root's password
+echo root:foobar | chpasswd
+
+# avoid sudo lecture during tests
+su -c 'echo foobar | sudo --stdin whoami' - admin
+
+# create user account for running the test
+if ! id runtest 2>/dev/null; then
+    useradd -c 'Test runner' runtest
+    # allow test to set up things on the machine
+    mkdir -p /root/.ssh
+    curl https://raw.githubusercontent.com/cockpit-project/bots/master/machine/identity.pub  >> /root/.ssh/authorized_keys
+    chmod 600 /root/.ssh/authorized_keys
+fi
+chown -R runtest "$SOURCE"
+
+# disable core dumps, we rather investigate them upstream where test VMs are accessible
+echo core > /proc/sys/kernel/core_pattern
+
+systemctl enable --now cockpit.socket
+
+# Run tests as unprivileged user
+su - -c "env SOURCE=$SOURCE LOGS=$LOGS $TESTS/run-test.sh" runtest
+
+RC=$(cat $LOGS/exitcode)
+exit ${RC:-1}