Allow environment PATH customization

Adds a list variable to configure the PATH set in /etc/environment
on the openstack hosts.

Change-Id: Ia36deb59d5a5c8928fdd275922adcad1c8ac0fc4

defaults/main.yml

@@ -46,6 +46,18 @@ gc_val: "{{ ansible_memtotal_mb | default(1024) | bit_length_power_of_2 }}"
 # The ste value has a Max allowable value of 8192 unless set by the user.
 set_gc_val: "{{ gc_val if (gc_val | int <= 8192) else 8192 }}"
 
+# Controls the shell search PATH environment variable dropped in
+# /etc/environment
+openstack_host_environment_path:
+  - /usr/local/sbin
+  - /usr/local/bin
+  - /usr/sbin
+  - /usr/bin
+  - /sbin
+  - /bin
+  - /usr/games
+  - /usr/local/games
+
 # System control kernel tuning
 openstack_kernel_options:
   - { key: 'fs.inotify.max_user_watches', value: 36864 }
@@ -75,4 +87,3 @@ openstack_kernel_options:
 
 # Set the openstack domain name
 openstack_domain: openstack.local
-

releasenotes/notes/path-customization-e7e0ae0f93e5283b.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - The PATH environment variable that is configured on the remote system can
+    now be set using the ``openstack_host_environment_path`` list variable.

templates/environment.j2

@@ -1,6 +1,6 @@
 # {{ ansible_managed }}
 
-PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
+PATH="{{ openstack_host_environment_path | join(':') }}"
 {% if global_environment_variables is defined %}
 {% for key, value in global_environment_variables.iteritems() %}
 {% if value %}