test: image-pull validation (one good, one bad)

2-nomad-config/glance.nomad.hcl

@@ -12,7 +12,7 @@ job "glance" {
       driver = "docker"
 
       config {
-        image = "glanceapp/glance:latest"
+        image = "glanceapp/glance:v0.7.8"
         ports = ["http"]
         volumes = [
           "local/glance.yml:/app/config/glance.yml",

2-nomad-config/openreader.nomad.hcl

@@ -59,7 +59,7 @@ job "openreader" {
       driver = "docker"
 
       config {
-        image = "ghcr.io/richardr1126/openreader:v2.1.2"
+        image = "ghcr.io/richardr1126/openreader:v99.99.99"
         ports = ["http"]
       }