aurweb dev playbook & fixes for aurweb playbook

aurweb role:

• Make sure that we install gunicorn and uvicorn
• Move python module installation:
  We need some modules to be installed before doing the DB init. (alembic)
• Remove double entry for starting aurweb-git-archive.timer
• Link update wrapper after creating git repo
• Fix permissions for cgit deployment
• Refactor aurweb role variables

root_ssh role:

• Add possibility to add additional ssh root keys

aur-dev.archlinux.org playbook:

• New playbook for aur dev machine(s) ("review apps")
  Goal is to spawn and provision a new VM with aurweb when an MR is created
  See: https://md.archlinux.org/devops-agenda-27-july#

playbooks/aur-dev.archlinux.org.yml

+- name: Setup aur development host
+  hosts: '{{ aurdev_fqdn|default("none") }}'
+  remote_user: root
+  roles:
+    - { role: common, enable_zram_swap: true }
+    - { role: firewalld }
+    - { role: sshd }
+    - { role: root_ssh }
+    - { role: certbot }
+    - { role: nginx }
+    - { role: mariadb, mariadb_innodb_buffer_pool_size: '1G' }
+    - { role: sudo }
+    - { role: redis }
+    - { role: uwsgi }
+    - { role: aurweb, aurweb_domain: "{{ aurdev_fqdn }}", is_prod: false }
+    - { role: fail2ban }
+
+  pre_tasks:
+    - name: Update archlinux-keyring
+      pacman:
+        name: archlinux-keyring
+        update_cache: true
+
+    - name: Upgrade
+      pacman:
+        update_cache: true
+        upgrade: true
+
+    - name: Reboot
+      reboot:
+
+  post_tasks:
+    - name: Install packages for dummy data generation
+      pacman:
+        state: present
+        name:
+          - words
+          - fortune-mod
+
+    - name: Create data dir
+      file:
+        path: "{{ aurweb_dir }}/data"
+        state: directory
+        mode: "0755"
+      become: true
+      become_user: "{{ aurweb_user }}"
+
+    - name: Generate dummy data
+      command: poetry run schema/gendummydata.py data/dummy.sql
+      register: generated_data
+      args:
+        chdir: "{{ aurweb_dir }}"
+        creates: "{{ aurweb_dir }}/data/dummy.sql"
+      become: true
+      become_user: "{{ aurweb_user }}"
+
+    - name: Import dummy data
+      mysql_db:
+        name: "{{ aurweb_db }}"
+        login_host: "{{ aurweb_db_host }}"
+        login_password: "{{ vault_mariadb_users.root }}"
+        state: import
+        target: "{{ aurweb_dir }}/data/dummy.sql"
+      when: generated_data.changed