provide bastion details for both CI clouds

Author: sjpb

environments/.stackhpc/inventory/group_vars/all/bastion.yml

@@ -1,3 +1,12 @@
-bastion_user: slurm-app-ci
-bastion_ip: 128.232.222.183
+ci_cloud: "{{ lookup('env', 'CI_CLOUD') }}"
+bastion_config:
+  ARCUS:
+    user: slurm-app-ci
+    ip: 128.232.222.183
+  SMS:
+    user: steveb
+    ip: 185.45.78.150
+# NB: The bastion_{user,ip} variables are used directly in the CI workflow too
+bastion_user: "{{ bastion_config[ci_cloud].user }}"
+bastion_ip: "{{ bastion_config[ci_cloud].ip }}"
 ansible_ssh_common_args: '-o ProxyCommand="ssh {{ bastion_user }}@{{ bastion_ip }} -W %h:%p"'