feature(tests): prepare tests image

includes/prepare.yml

@@ -82,7 +82,6 @@ prepare tests:
       when: never
   interruptible: true
   before_script:
-    - apt-get update -yqq && apt-get install openssh-client -yqq
     - cp /usr/local/bin/clone /tmp/clone.sh
     - composer config gitlab-token.gitlab.wpdesk.dev gitlab-ci-token ${CI_JOB_TOKEN}
     - echo ${WPDESK_CI_VERSION}