apt target: use 'until' when the cache is updated (#65456)

This integration target can be unstable due to network/mirror issues:

    TASK [apt : uninstall hello with apt] ***
    fatal: [testhost]: FAILED! => {
        "changed": false,
        "cmd": "apt-get update",
        "msg": "E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-updates/universe/source/Sources.gz File has unexpected size (354740 != 354745). Mirror sync in progress? [...]",
        "rc": 100,
        [...]

test/integration/targets/apt/tasks/apt-multiarch.yml

@@ -4,6 +4,8 @@
 
 - name: install hello:{{ apt_foreign_arch }} with apt
   apt: pkg=hello:{{ apt_foreign_arch }} state=present update_cache=yes
+  register: apt_result
+  until: apt_result is success
 
 - name: uninstall hello:{{ apt_foreign_arch }} with apt
   apt: pkg=hello:{{ apt_foreign_arch }} state=absent purge=yes

test/integration/targets/apt/tasks/apt.yml

@@ -88,6 +88,7 @@
 - name: uninstall hello with apt
   apt: pkg=hello state=absent purge=yes
   register: apt_result
+  until: apt_result is success
 
 - name: check hello with dpkg
   shell: dpkg-query -l hello