Cache vagrant boxes (#11671)

.gitlab-ci/vagrant.yml

@@ -10,10 +10,12 @@
     KUBESPRAY_VAGRANT_CONFIG: tests/files/${CI_JOB_NAME}.rb
     DOCKER_NAME: vagrant
     VAGRANT_ANSIBLE_TAGS: facts
+    VAGRANT_HOME: "$CI_PROJECT_DIR/.vagrant.d"
+    PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
   tags: [ffci-vm-large]
   # only: [/^pr-.*$/]
   # except: ['triggers']
-  image: quay.io/kubespray/vm-kubespray-ci:v6
+  image: quay.io/kubespray/vm-kubespray-ci:v13
   services: []
   before_script:
     - echo $USER
@@ -27,6 +29,12 @@
     - ./tests/scripts/vagrant_clean.sh
   script:
     - ./tests/scripts/testcases_run.sh
+  cache:
+    key: $CI_JOB_NAME_SLUG
+    paths:
+      - .vagrant.d/boxes
+      - .cache/pip
+    policy: pull-push # TODO: change to "pull" when not on main
 
 vagrant_ubuntu20-calico-dual-stack:
   stage: deploy-extended