playbook: make it possible to run playbook when apt repository is broken

See merge request nexedi/slapos.package!179

playbook/roles/etckeeper/tasks/main.yml

@@ -7,7 +7,7 @@
     register: gitignore_file
 
   - name: Install git
-    apt: name=git state=latest update_cache=no
+    apt: name=git state=latest
     when: ansible_os_family == "Debian"
 
   - name: Install git
@@ -15,7 +15,7 @@
     when: ansible_os_family == "RedHat"
 
   - name: Install etckeeper
-    apt: name=etckeeper state=latest update_cache=no
+    apt: name=etckeeper state=latest
     when: ansible_os_family == "Debian"
 
   - name: Install etckeeper

playbook/roles/package/tasks/main.yml

-  - name: Install {{ package_name }} using apt
+  - name: Try to update apt cache
+    apt: update_cache=yes cache_valid_time=3600
+    when: ansible_os_family == "Debian" or ansible_os_family == "Linuxmint" or ansible_os_family == "Kylin"
+    ignore_errors: true
+
+  - name: Install {{ package_name }} (latest) using apt
+    # We use update_cache=yes without ignoring errors (Unlike the "Try to update apt cache" task above),
+    # because if `latest` package is requested it is an error if we can not update the cache.
     apt: name={{ package_name }} state={{ package_state }} update_cache=yes cache_valid_time=3600
-    when: ansible_os_family == "Debian" or ansible_os_family == "Linuxmint" or ansible_os_family == "Kylin" 
+    when: package_state == "latest" and ansible_os_family == "Debian" or ansible_os_family == "Linuxmint" or ansible_os_family == "Kylin"
+
+  - name: Install {{ package_name }} using apt
+    apt: name={{ package_name }} state={{ package_state }}
+    when: package_state != "latest" and ansible_os_family == "Debian" or ansible_os_family == "Linuxmint" or ansible_os_family == "Kylin"
 
   - name: Install {{ package_name }} using yum
     yum: name={{ package_name }} state={{ package_state }} update_cache=yes

playbook/roles/repository/tasks/debian_init.yml

@@ -3,6 +3,7 @@
     command: apt-get update -y --allow-releaseinfo-change
     when: (ansible_distribution == "Debian" and ansible_distribution_major_version|int > 9) or
           (ansible_distribution == "Ubuntu" and ansible_distribution_major_version|int > 18)
+    ignore_errors: true
 
   - name: Install gpg using apt
     apt: name=gpg state=present

playbook/roles/slapos-proxy/meta/main.yml

 ---
 dependencies:
   - { role: repository, when: not slapos_ansible_offline}
+  - { role: package, package_name: slapos-node, package_state: present, when: ansible_distribution != "CentOS"}

playbook/roles/slapos-proxy/tasks/main.yml

@@ -10,15 +10,11 @@
       state: directory
       mode: 0755
 
-  - name: Install packages using apt
-    apt: name=slapos-node state=present update_cache=yes cache_valid_time=3600
-    when: ansible_os_family == "Debian" and not slapos_ansible_offline
-
   - name: Uninstall firewalld on CentOS
     yum: name=firewalld state=absent update_cache=yes
     when: ansible_distribution == "CentOS"
 
-  - name: Install re6stnet on CentOS
+  - name: Install slapos-node on CentOS
     yum: name=slapos.node state=present update_cache=yes
     when: ansible_distribution == "CentOS" and ansible_distribution_major_version != "7" and not slapos_ansible_offline
 
@@ -29,7 +25,7 @@
       checksum: "md5:37446cc16b38fa5769f3e084294c8683"
     when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7" and not slapos_ansible_offline
 
-  - name: Install re6stnet on CentOS 7
+  - name: Install slapos-node on CentOS 7
     yum: name=/tmp/slapos.node-1.0.56-2.1.x86_64.rpm state=present update_cache=yes
     when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7" and not slapos_ansible_offline
 

playbook/roles/standalone-shared/tasks/debian9-gcc-4.9.yml

 ---
   - name: Install Debian Jessie repository for Debian 9 for gcc-4.9
-    apt_repository: repo='deb http://ftp.us.debian.org/debian/ jessie main contrib non-free' state=present update_cache=no
+    apt_repository: repo='deb http://ftp.us.debian.org/debian/ jessie main contrib non-free' state=present
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "9"
 
   - name: Update repos for debian 9
@@ -8,11 +8,11 @@
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "9"
 
   - name: Install gcc-4.9 on Debian 9
-    apt: name=gcc-4.9 state=present update_cache=yes cache_valid_time=3600
+    apt: name=gcc-4.9 state=present
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "9"
 
   - name: Install g++-4.9 on Debian 9
-    apt: name=g++-4.9 state=present update_cache=yes cache_valid_time=3600
+    apt: name=g++-4.9 state=present
     when: ansible_distribution == "Debian" and ansible_distribution_major_version == "9"
 
   - name: Default to cpp-4.9