oidc: fix recognition of x forwarded headers from v2.4.11

The Apache mod_auth_openidc requires explicit configuration in
order to read the X-Forwarded-Proto from the reverse proxy as
of version v2.4.11 which comes in from Ubuntu Jammy.

Eventually this will need to become the default and the
variable added in this patch can be removed.

Change-Id: Ic9d37a8463d137508d20de20b10af806a223f852

releasenotes/notes/keystone-oidc-forwarded-proto-92471121e3949428.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fixes use of Apache mod_auth_openidc on Ubuntu Jammy where a new
+    OIDCXForwardedHeaders configuration option is required.

templates/keystone-httpd.conf.j2

@@ -53,6 +53,9 @@ Listen {{ keystone_web_server_bind_address }}:{{ keystone_service_port }}
     OIDCClientSecret {{ keystone_sp.trusted_idp_list.0.oidc_client_secret }}
     OIDCCryptoPassphrase {{ keystone_sp.trusted_idp_list.0.oidc_crypto_passphrase }}
     OIDCRedirectURI {{ keystone_sp.trusted_idp_list.0.oidc_redirect_uri }}
+    {% if _keystone_sp_apache_mod_auth_openidc_gte_2_4_11 is defined -%}
+    OIDCXForwardedHeaders {{ keystone_secure_proxy_ssl_header }}
+    {% endif -%}
     {% if keystone_sp.trusted_idp_list.0.oidc_auth_verify_jwks_uri is defined -%}
     OIDCOAuthVerifyJwksUri {{ keystone_sp.trusted_idp_list.0.oidc_auth_verify_jwks_uri }}
     {% endif -%}

vars/ubuntu-22.04.yml

@@ -0,0 +1,106 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cache_timeout: 600
+
+keystone_distro_packages:
+  - git
+  - libldap-common
+  - openssh-server
+  - rsync
+  - cron
+  - libpython3-dev
+
+keystone_devel_distro_packages:
+  - docutils-common
+  - libffi-dev
+  - libjs-sphinxdoc
+  - libjs-underscore
+  - libldap2-dev
+  - libsasl2-dev
+  - libsystemd-dev
+  - libssl-dev
+  - libxslt1.1
+  - libxslt1-dev
+  - libxml2-dev
+  - pkg-config
+
+keystone_service_distro_packages:
+  - python3-keystone
+  - python3-systemd
+  - uwsgi
+  - uwsgi-plugin-python3
+
+keystone_apache_distro_packages:
+  - apache2
+  - apache2-utils
+  - libapache2-mod-proxy-uwsgi
+
+keystone_idp_distro_packages:
+  - ssl-cert
+  - xmlsec1
+
+keystone_sp_apache_mod_packages:
+  - name: libapache2-mod-shib
+    state: "{{ keystone_sp_apache_mod_shib | ternary('present', 'absent') }}"
+  - name: libapache2-mod-auth-openidc
+    state: "{{ keystone_sp_apache_mod_auth_openidc | ternary('present', 'absent') }}"
+
+keystone_developer_mode_distro_packages:
+  - build-essential
+
+keystone_oslomsg_amqp1_distro_packages:
+  - libsasl2-modules
+  - sasl2-bin
+
+keystone_apache_default_sites:
+  - "/etc/apache2/sites-enabled/000-default.conf"
+
+keystone_apache_site_available: "/etc/apache2/sites-available/keystone-httpd.conf"
+keystone_apache_site_enabled: "/etc/apache2/sites-enabled/keystone-httpd.conf"
+keystone_apache_conf: "/etc/apache2/apache2.conf"
+keystone_apache_default_log_folder: "/var/log/apache2"
+keystone_apache_default_log_owner: "root"
+keystone_apache_default_log_grp: "adm"
+keystone_apache_security_conf: "/etc/apache2/conf-available/security.conf"
+
+keystone_apache_configs:
+  - { src: "keystone-ports.conf.j2", dest: "/etc/apache2/ports.conf" }
+  - { src: "keystone-httpd.conf.j2", dest: "/etc/apache2/sites-available/keystone-httpd.conf" }
+  - { src: "keystone-httpd-mpm.conf.j2", dest: "/etc/apache2/mods-available/mpm_{{ keystone_httpd_mpm_backend }}.conf" }
+
+keystone_apache_modules:
+  - name: "ssl"
+    state: "{{ (keystone_backend_ssl | bool) | ternary('present', 'absent') }}"
+  - name: "shib"
+    state: "{{ keystone_sp_apache_mod_shib | ternary('present', 'absent') }}"
+  - name: "auth_openidc"
+    state: "{{ keystone_sp_apache_mod_auth_openidc | ternary('present', 'absent') }}"
+  - name: "proxy_uwsgi"
+    state: "present"
+  - name: "headers"
+    state: "present"
+# This can be enabled when Apache2.5+ is available
+#  - name: "mod_journald"
+#    state: "present
+
+keystone_system_service_name: "{{ (keystone_use_uwsgi | bool) | ternary('keystone-wsgi-public', 'apache2') }}"
+
+keystone_uwsgi_bin: '/usr/bin'
+
+keystone_sshd: ssh
+
+# From 2.4.11, mod_auth_openidc ignores X-Forwarded headers unless explicitly configured
+_keystone_sp_apache_mod_auth_openidc_gte_2_4_11: True