[proxmox_template] Fix error while uploading big ISO to Proxmox VE cluster (#6757)

* [proxmox_template] Fix error while uploading big ISO to Proxmox VE cluster

* Fix pep8 test

* Add changelog fragment

* Add notes about requests_toolbelt

* Check versions and file size

* Fix typo in notes

* Add unit test. Move try inside of each function.

* Fix sanity tests

* Add proxmoxer in requirements file

* Update integration tests

* Add proxmoxer into constraints.txt

* Address review comments

* Don't run tests on 2.6 python

* Disable Python 2.6 tests for other proxmox modules

tests/integration/targets/proxmox_template/aliases

@@ -0,0 +1,6 @@
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+unsupported
+proxmox_template

tests/integration/targets/proxmox_template/tasks/main.yml

@@ -0,0 +1,136 @@
+####################################################################
+# WARNING: These are designed specifically for Ansible tests       #
+# and should not be used as examples of how to write Ansible roles #
+####################################################################
+
+# Copyright (c) 2023, Sergei Antipov <greendayonfire at gmail.com>
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+- name: Proxmox VE virtual machines templates management
+  tags: ['template']
+  vars:
+    filename: /tmp/dummy.iso
+  block:
+    - name: Create dummy ISO file
+      ansible.builtin.command:
+        cmd: 'truncate -s 300M {{ filename }}'
+
+    - name: Delete requests_toolbelt module if it is installed
+      ansible.builtin.pip:
+        name: requests_toolbelt
+        state: absent
+
+    - name: Install latest proxmoxer
+      ansible.builtin.pip:
+        name: proxmoxer
+        state: latest
+
+    - name: Upload ISO as template to Proxmox VE cluster should fail
+      proxmox_template:
+        api_host: '{{ api_host }}'
+        api_user: '{{ user }}@{{ domain }}'
+        api_password: '{{ api_password | default(omit) }}'
+        api_token_id: '{{ api_token_id | default(omit) }}'
+        api_token_secret: '{{ api_token_secret | default(omit) }}'
+        validate_certs: '{{ validate_certs }}'
+        node: '{{ node }}'
+        src: '{{ filename }}'
+        content_type: iso
+        force: true
+      register: result
+      ignore_errors: true
+
+    - assert:
+        that:
+          - result is failed
+          - result.msg is match('\'requests_toolbelt\' module is required to upload files larger than 256MB')
+
+    - name: Install old (1.1.2) version of proxmoxer
+      ansible.builtin.pip:
+        name: proxmoxer==1.1.1
+        state: present
+
+    - name: Upload ISO as template to Proxmox VE cluster should be successful
+      proxmox_template:
+        api_host: '{{ api_host }}'
+        api_user: '{{ user }}@{{ domain }}'
+        api_password: '{{ api_password | default(omit) }}'
+        api_token_id: '{{ api_token_id | default(omit) }}'
+        api_token_secret: '{{ api_token_secret | default(omit) }}'
+        validate_certs: '{{ validate_certs }}'
+        node: '{{ node }}'
+        src: '{{ filename }}'
+        content_type: iso
+        force: true
+      register: result
+
+    - assert:
+        that:
+          - result is changed
+          - result is success
+          - result.msg is match('template with volid=local:iso/dummy.iso uploaded')
+
+    - name: Install latest proxmoxer
+      ansible.builtin.pip:
+        name: proxmoxer
+        state: latest
+
+    - name: Make smaller dummy file
+      ansible.builtin.command:
+        cmd: 'truncate -s 128M {{ filename }}'
+
+    - name: Upload ISO as template to Proxmox VE cluster should be successful
+      proxmox_template:
+        api_host: '{{ api_host }}'
+        api_user: '{{ user }}@{{ domain }}'
+        api_password: '{{ api_password | default(omit) }}'
+        api_token_id: '{{ api_token_id | default(omit) }}'
+        api_token_secret: '{{ api_token_secret | default(omit) }}'
+        validate_certs: '{{ validate_certs }}'
+        node: '{{ node }}'
+        src: '{{ filename }}'
+        content_type: iso
+        force: true
+      register: result
+
+    - assert:
+        that:
+          - result is changed
+          - result is success
+          - result.msg is match('template with volid=local:iso/dummy.iso uploaded')
+
+    - name: Install requests_toolbelt
+      ansible.builtin.pip:
+        name: requests_toolbelt
+        state: present
+
+    - name: Make big dummy file
+      ansible.builtin.command:
+        cmd: 'truncate -s 300M {{ filename }}'
+
+    - name: Upload ISO as template to Proxmox VE cluster should be successful
+      proxmox_template:
+        api_host: '{{ api_host }}'
+        api_user: '{{ user }}@{{ domain }}'
+        api_password: '{{ api_password | default(omit) }}'
+        api_token_id: '{{ api_token_id | default(omit) }}'
+        api_token_secret: '{{ api_token_secret | default(omit) }}'
+        validate_certs: '{{ validate_certs }}'
+        node: '{{ node }}'
+        src: '{{ filename }}'
+        content_type: iso
+        force: true
+      register: result
+
+    - assert:
+        that:
+          - result is changed
+          - result is success
+          - result.msg is match('template with volid=local:iso/dummy.iso uploaded')
+
+  always:
+    - name: Delete ISO file from host
+      ansible.builtin.file:
+        path: '{{ filename }}'
+        state: absent