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

@@ -23,12 +23,22 @@
           - 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 /tmp/dummy.sql
+      command: poetry run schema/gendummydata.py data/dummy.sql
       register: generated_data
       args:
         chdir: "{{ aurweb_dir }}"
-        creates: /tmp/dummy.sql
+        creates: "{{ aurweb_dir }}/data/dummy.sql"
+      become: true
+      become_user: "{{ aurweb_user }}"
 
     - name: Import dummy data
       mysql_db:
@@ -36,5 +46,5 @@
         login_host: "{{ aurweb_db_host }}"
         login_password: "{{ vault_mariadb_users.root }}"
         state: import
-        target: /tmp/dummy.sql
+        target: "{{ aurweb_dir }}/data/dummy.sql"
       when: generated_data.changed