feat: add ability to pin repo priority for APT

The priority might be set with `infiniband_apt_priority`.

README.md

@@ -19,6 +19,10 @@ Define the APT or YUM/DNF repositories, with the path to the GPG key.
     # Mellanox GPG Key
     infiniband_gpg_key: 'http://www.mellanox.com/downloads/ofed/RPM-GPG-KEY-Mellanox'
 
+To pin the priority of the repository (APT only).
+
+    infiniband_apt_priority: 490
+
 The name of the kernel headers package might change across distros. This can be
 defined with:
 

defaults/main.yml

@@ -8,6 +8,9 @@ infiniband_yum_repository: 'https://linux.mellanox.com/public/repo/infiniband/la
 # Mellanox GPG Key
 infiniband_gpg_key: 'http://www.mellanox.com/downloads/ofed/RPM-GPG-KEY-Mellanox'
 
+# Pin the priority of the APT repository.
+# infiniband_apt_priority: 490
+
 # IPoIB interfaces
 #
 # Define the list of interfaces to configure with IPoIB. Each item of the list

tasks/repositories-Debian.yml

@@ -10,6 +10,16 @@
     dest: /etc/apt/sources.list.d/infiniband.list
     mode: 0644
 
+- name: Configure APT preferences for InfiniBand repository
+  ansible.builtin.copy:
+    content: |
+      Package: *
+      Pin: release o=MLNX_OFED
+      Pin-Priority: {{ infiniband_apt_priority }}
+    dest: /etc/apt/preferences.d/priority-infiniband
+    mode: 0644
+  when: infiniband_apt_priority is defined
+
 - name: "Update repository cache"
   apt:
     update_cache: yes