gen_nodes: ensure kdevops prefix has no dashes

Folks trying to use kdevops and testing with fstests will quickly
find out a surprise that their config is not being parsed correctly
until later.

Fix this by preventing bringup if the prefix has a dash.

We use the dash to help parallelize testing filesystem profiles and
so the host prefix goes before the filesystem name and test profile.

Signed-off-by: Luis Chamberlain <[email protected]>

Author: mcgrof

playbooks/roles/gen_nodes/tasks/main.yml

@@ -18,6 +18,11 @@
   command: "id -g -n"
   register: my_group
 
+- name: Fail if kdevops_host_prefix contains a dash
+  fail:
+    msg: "Invalid kdevops_host_prefix '{{ kdevops_host_prefix }}'. The prefix cannot contain a dash ('-')."
+  when: kdevops_host_prefix is search("-")
+
 - name: Create guestfs directory
   ansible.builtin.file:
     path: "{{ guestfs_path }}"