setup errors and suggestions

[amg-web]

I continue to play with the issue I wrote in prvious ticket.
installed Jitsi with xmpp_auth: none and jibri on single server, U18.04
Again can not connect. from prosody error log:
Apr 24 12:14:40 modulemanager<->error<->Unable to load module 'storage_memory': /usr/lib/prosody/modules/mod_storage_memory.lua: No such file or directory
Apr 24 12:14:40 storagemanager<>error<->Failed to load storage driver plugin memory on lobby.zone.org: /usr/lib/prosody/modules/mod_storage_memory.lua: No such file or directory

Problems during playbook run:

1. gnupg or gnupg2 packet is required.
2. linux-image-extra-virtual in my case
3. chrome repositary is duplicated.
4. we can add latest stable prosody from official repositary (0.11.8 at the moment ) https://prosody.im/download/package_repository
5. for token authorisation lua5.2 and liblua5.2-dev is required. All the rest deb package will do itself

for chrome installation I use:

- name: Install Chrome browser

apt:

deb: https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb

it will add repositary automatically and install chrome.

I use debconf to preconfigure jitsi-meet-tokens and domain for jitsi
I do not want to make PR .