ci: fix test runner SSH config and pin robotframework version (#148)

Author: BSpendlove

scripts/qemu/test-runner/packer/cloud-init/user-data

@@ -14,7 +14,12 @@ chpasswd:
       password: testrunner
       type: text
 
+write_files:
+  - path: /etc/ssh/sshd_config.d/99-packer.conf
+    content: |
+      PermitRootLogin yes
+      PasswordAuthentication yes
+    permissions: "0644"
+
 runcmd:
-  - sed -i 's/^#*PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config
-  - sed -i 's/^#*PasswordAuthentication.*/PasswordAuthentication yes/' /etc/ssh/sshd_config
-  - systemctl restart sshd
+  - systemctl restart ssh

scripts/qemu/test-runner/packer/scripts/install-robot.sh

@@ -8,4 +8,4 @@ set -euo pipefail
 apt-get update
 apt-get install -y python3 python3-pip python3-venv
 
-pip3 install --break-system-packages robotframework
+pip3 install --break-system-packages robotframework==7.4.1