renamed vars to use 'lxc' prefix instead of 'container'

roles/proxmox-lxc-provision/tasks/start.yaml

@@ -1,14 +1,8 @@
 ---
 - name: Start the LXC container
   community.general.proxmox:
-    api_host: "{{ proxmox_api_host }}"
-    api_port: "{{ proxmox_api_port }}"
-    api_user: "{{ proxmox_api_user }}"
-    api_token_id: "{{ proxmox_api_token_id }}"
-    api_token_secret: "{{ proxmox_api_token_secret }}"
-    validate_certs: "{{ proxmox_api_validate_certs }}"
-
-    vmid: "{{ container_result.vmid }}"
+    <<: "{{ proxmox_api_connection }}"
+    vmid: "{{ lxc_result.vmid }}"
     state: started
   register: start_result
   retries: 3