Fix systemd init template for program override

The systemd-init template was not looking at the program_override
variable within each service's dictionary.

This also fixes glance-api so that it's running under uWSGI when the v1
API is disabled. Creating images from a remote URL is exclusive to the
v1 API and does not work when glance-api is run under uWSGI.

The libxml2-dev package is required by uWSGI and has been added to the
distro package list.

Additional options have been added to the uWSGI configuration to better
support requests containing chunked data (image uploads).

Change-Id: I14f3162a4666d770beec9746469021466fa4d449
(cherry picked from commit 43aa00424f)

defaults/main.yml

@@ -234,12 +234,16 @@ glance_services:
     init_config_overrides: "{{ glance_api_init_overrides }}"
     start_order: 1
     wsgi_overrides: "{{ glance_api_uwsgi_ini_overrides }}"
-    wsgi_app: True
-    log_string: "--logto "
+    wsgi_app: "{{ not glance_enable_v1_api }}"
+    log_string: "{{ glance_enable_v1_api | ternary('--log-file=', '--logto ') }}"
     wsgi_name: glance-wsgi-api
     uwsgi_bind_address: "{{ glance_api_bind_address }}"
     uwsgi_port: "{{ glance_api_service_port }}"
-    program_override: "{{ glance_bin }}/uwsgi --ini /etc/uwsgi/glance-api.ini"
+    program_override: >-
+       {{ glance_enable_v1_api | ternary(
+          glance_bin ~ '/glance-api',
+          glance_bin ~ '/uwsgi --ini /etc/uwsgi/glance-api.ini')
+       }}
   glance-registry:
     group: glance_registry
     service_name: glance-registry

templates/glance-systemd-init.j2

@@ -10,7 +10,7 @@ Type=simple
 User={{ glance_system_user_name }}
 Group={{ glance_system_group_name }}
 
-{% if program_override is defined %}
+{% if item.program_override is defined %}
 ExecStart={{ item.program_override }} {{ item.program_config_options | default('') }} {{ item.log_string | default('--log-file=') }}/var/log/glance/{{ item.service_name }}.log
 {% else %}
 ExecStart={{ glance_bin }}/{{ item.service_name }} {{ item.program_config_options | default('') }} --log-file=/var/log/glance/{{ item.service_name }}.log

templates/glance-uwsgi.ini.j2

@@ -17,3 +17,6 @@ add-header = Connection: close
 buffer-size = {{ glance_wsgi_buffer_size }}
 thunder-lock = true
 logfile-chmod = 644
+http-auto-chunked = true
+http-raw-body = true
+socket-timeout = 10

vars/redhat-7.yml

@@ -16,8 +16,9 @@
 glance_distro_packages:
   - cronie
   - cronie-anacron
+  - git
+  - libxml2-devel
+  - nfs-utils
   - rpcbind
   - rsync
-  - git
-  - nfs-utils
   - which

vars/suse-42.yml

@@ -17,8 +17,9 @@
 glance_distro_packages:
   - cronie
   - cronie-anacron
+  - git-core
+  - libxml2-devel
+  - nfs-utils
   - rpcbind
   - rsync
-  - git-core
-  - nfs-utils
   - which

vars/ubuntu-16.04.yml

@@ -18,7 +18,8 @@ cache_timeout: 600
 
 # Common apt packages
 glance_distro_packages:
+  - git
+  - libxml2-dev
+  - nfs-common
   - rpcbind
   - rsync
-  - git
-  - nfs-common