base-test: add descriptive names

This ports I40f2592a316bb8293f91d90be3996a6c697de196 to keep this file
in sync with base/pre.yaml

Change-Id: Ie0063edc6e6ae9e1c478b538cbda010dd03177c9

playbooks/base-test/pre.yaml

@@ -1,4 +1,5 @@
 - hosts: localhost
+  name: Create job header and inventory
   roles:
     - role: emit-job-header
       zuul_log_path_shard_build: true
@@ -18,6 +19,7 @@
 # to explicitly move away from centos-8 node type.  We obviously hope
 # to remove this hack ASAP.
 - hosts: all
+  name: Hard fail CentOS 8 nodes
   tasks:
     - name: Fail CentOS 8 nodes
       fail:
@@ -28,6 +30,7 @@
       loop: "{{ query('inventory_hostnames', 'all,!localhost') }}"
 
 - hosts: all
+  name: Setup Zuul environment
   pre_tasks:
     # NOTE(pabelanger): Until we hit the validate-host role, we have a minimal
     # set of ansible variables collected by zuul-executor. This doesn't include
@@ -43,6 +46,7 @@
     - ensure-output-dirs
 
 - hosts: all
+  name: Configure unbound
   roles:
     # NOTE(pabelanger): We run this role in its own play to ensure unbound is
     # restarted before proceeding with any other role. This is because we use
@@ -51,6 +55,7 @@
     - configure-unbound
 
 - hosts: all
+  name: Prepare workspace and configure mirrors
   roles:
     - validate-host
     - prepare-workspace-git