Name plays in playbooks

In run_all, we start a bunch of plays in sequence, but it's difficult
to tell what they're doing until you see the tasks.  Name the plays
themselves to produce a better narrative structure.

Change-Id: I0597eab2c06c6963601dec689714c38101a4d470

playbooks/base.yaml

@@ -1,4 +1,5 @@
 - hosts: "!disabled"
+  name: "Base: set up users and base package repositories on all hosts"
   roles:
     - users
     - base-repos
@@ -6,12 +7,14 @@
 # Run base-server seperately so that the update apt cache handler in base-repos
 # fires before we run base-server
 - hosts: "!disabled"
+  name: "Base: set up common environment on all hosts"
   roles:
     - base-server
     - timezone
     - unbound
 
 - hosts: bridge.openstack.org:!disabled
+  name: "Base: configure OpenStackSDK on bridge"
   tasks:
     - include_role:
         name: configure-openstacksdk
@@ -24,17 +27,20 @@
         openstacksdk_config_template: clouds/bridge_clouds.yaml.j2
 
 - hosts: nodepool-launcher:nodepool-builder:!disabled
+  name: "Base: configure OpenStackSDK on nodepool"
   strategy: free
   roles:
     - minimal-nodepool
     - configure-openstacksdk
 
 - hosts: "puppet:!disabled"
+  name: "Base: install and configure puppet on puppet hosts"
   roles:
     - puppet-install
     - disable-puppet-agent
 
 - hosts: "!ci-backup:!disabled"
+  name: "Base: set up common environment on all hosts (except backup)"
   roles:
     - exim
     - iptables

playbooks/bridge.yaml

@@ -1,4 +1,5 @@
 - hosts: bridge.openstack.org
+  name: "Bridge: configure the bastion host"
   become: true
   roles:
     - pip3

playbooks/remote_puppet_afs.yaml

@@ -1,4 +1,5 @@
 - hosts: "afs:afsdb:!disabled"
+  name: "AFS: run puppet on the AFS servers"
   strategy: free
   roles:
     - puppet

playbooks/remote_puppet_else.yaml

@@ -1,4 +1,5 @@
 - hosts: 'puppet:!review:!git-server:!zuul-scheduler:!afs:!afsdb:!puppetmaster*:!disabled'
+  name: "Puppet-else: run puppet on all other servers"
   strategy: free
   roles:
     - puppet

playbooks/remote_puppet_git.yaml

@@ -1,8 +1,8 @@
 - hosts: "localhost:!disabled"
+  name: "Puppet-git: Collect the project-config ref"
   strategy: free
   connection: local
   tasks:
-
     # Note that git module does ls-remote if clone is set to no and places
     # the remote_head value in returndict.after
     - name: Grab project-config repo info
@@ -12,29 +12,29 @@
       register: gitinfo
 
 - hosts: "git-server:!disabled"
+  name: "Puppet-git: Run puppet on the git servers"
   strategy: free
   max_fail_percentage: 1
   roles:
-
     - role: puppet
       facts:
         project_config_ref: "{{ hostvars.localhost.gitinfo.after }}"
 
 - hosts: "review:!disabled"
+  name: "Puppet-git: Run puppet on the Gerrit server"
   strategy: free
   gather_facts: true
   roles:
-
     - role: puppet
       facts:
         project_config_ref: "{{ hostvars.localhost.gitinfo.after }}"
       puppet_timeout: 60m
 
 - hosts: "zuul-scheduler:!disabled"
+  name: "Puppet-git: Run puppet on the Zuul scheduler"
   strategy: free
   gather_facts: true
   roles:
-
     - role: puppet
       facts:
         project_config_ref: "{{ hostvars.localhost.gitinfo.after }}"

playbooks/run_cloud_launcher.yaml

@@ -1,6 +1,6 @@
----
 - hosts: localhost
+  name: "Cloud-launcher: Run cloud launcher"
   connection: local
   gather_facts: false
   roles:
-    - { role: cloud-launcher }
+    - cloud-launcher

playbooks/update-system-config.yaml

@@ -1,9 +1,8 @@
----
 - hosts: "localhost:!disabled"
+  name: "System-config: Update the system-config repo on bridge"
   connection: local
   gather_facts: false
   tasks:
-
     - name: Make sure system-config repo is up to date
       git:
         repo: https://git.openstack.org/openstack-infra/system-config

playbooks/update_puppet_version.yaml

@@ -1,4 +1,5 @@
 - hosts: 'puppet4'
+  name: "Puppet-version: install puppet-4 on puppet-4 hosts"
   gather_facts: false
   tasks:
   - git: