playbook: Remove workaround role and tasks for Debian 9 repository

Signing key has been recreated and repository/projects updated with the new key, everything should be fine now so we can remove workarounds in playbooks (insecure repository updating)

/reviewed-on nexedi/slapos.package!59

playbook/roles/debian9-aptconf/files/99slapos

-# This file was included by ansible and it can be overwriten
-APT::Get::AllowUnauthenticated "true";
-APT::Get::AllowWeakRepositories "true";
-APT::Get::AllowInsecureRepositories "true";

playbook/roles/debian9-aptconf/tasks/main.yml

-
-  - copy: dest=/etc/apt/apt.conf.d/99slapos src=99slapos
-    when: (ansible_distribution == "Debian" and ansible_distribution_major_version == "9") or (ansible_distribution == "Ubuntu" and ansible_distribution_major_version == "17")
-
-  - name: Update repos for debian 9
-    shell: apt update --allow-insecure-repositories
-    when: (ansible_distribution == "Debian" and ansible_distribution_major_version == "9") or (ansible_distribution == "Ubuntu" and ansible_distribution_major_version == "17")
-

playbook/roles/repository/meta/main.yml

----
-dependencies:
-  - { role: debian9-aptconf } 

playbook/roles/repository/tasks/main.yml

@@ -33,13 +33,9 @@
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "6"
 
   - name: Install Debian 9 repository
-    apt_repository: repo='deb {{ base_open_build_url }}/Debian_9.0/ ./' state=present update_cache=no
+    apt_repository: repo='deb {{ base_open_build_url }}/Debian_9.0/ ./' state=present
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "9"
 
-  - name: Update repos for debian 9
-    shell: apt update --allow-insecure-repositories
-    when: (ansible_distribution == "Debian" and ansible_distribution_major_version == "9") or (ansible_distribution == "Ubuntu" and ansible_distribution_major_version == "17")
-
   - name: Install Debian 8 repository
     apt_repository: repo='deb {{ base_open_build_url }}/Debian_8.0/ ./' state=present
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "8"