Allow HTTP headers to be customised for IPA image download

This is useful if you need to specify a token when downloading
the image.

Change-Id: I27835fbb70f01cc2ef98184e1e658f3bbce7ae54

playbooks/roles/bifrost-ironic-install/README.md

@@ -269,6 +269,10 @@ ssh_private_key: If a user wishes to define an SSH private key as a string,
                  this variable can be utilized which overrides the
                  ssh_private_key_path setting.
 
+### Ironic Python Agent
+
+ipa_download_headers: HTTP headers to use when downloading IPA.
+
 ### Changing Database Configuration
 
 Bifrost utilizes a nested data stucture for the configuration of database.

playbooks/roles/bifrost-ironic-install/defaults/main.yml

@@ -73,6 +73,7 @@ use_tinyipa: true
 enable_uefi_ipxe: true
 ipxe_efi_binary: ipxe.efi
 
+ipa_download_headers: {}
 ipa_kernel: "{{http_boot_folder}}/ipa.kernel"
 ipa_ramdisk: "{{http_boot_folder}}/ipa.initramfs"
 ipa_kernel_url: "{{ ipa_file_protocol }}://{{ internal_ip }}:{{ file_url_port }}/ipa.kernel"

playbooks/roles/bifrost-ironic-install/tasks/download_ipa_image.yml

@@ -23,6 +23,7 @@
   get_url:
     url: "{{ ipa_kernel_upstream_checksum_url }}"
     dest: "{{ ipa_kernel }}.{{ ipa_kernel_upstream_checksum_algo }}"
+    headers: "{{ ipa_download_headers | default(omit, true) }}"
     timeout: 300
     force: yes
     owner: ironic
@@ -47,6 +48,7 @@
     mode: 0644
     checksum: "{{ ipa_kernel_checksum | default(omit) }}"
     timeout: 300
+    headers: "{{ ipa_download_headers | default(omit, true) }}"
     # Keep downloading it until we get a good copy
     force: yes
   register: ipa_kernel_download_done
@@ -66,6 +68,7 @@
   get_url:
     url: "{{ ipa_ramdisk_upstream_checksum_url }}"
     dest: "{{ ipa_ramdisk }}.{{ ipa_ramdisk_upstream_checksum_algo }}"
+    headers: "{{ ipa_download_headers | default(omit, true) }}"
     timeout: 300
     force: yes
     owner: ironic
@@ -87,6 +90,7 @@
     dest: "{{ ipa_ramdisk }}"
     owner: ironic
     group: ironic
+    headers: "{{ ipa_download_headers | default(omit, true) }}"
     mode: 0644
     checksum: "{{ ipa_ramdisk_checksum | default(omit) }}"
     timeout: 300

releasenotes/notes/ipa-headers-032412a0fc741de3.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Adds ``ipa_download_headers`` variable to control HTTP headers used when
+    downloading IPA images.