Drop unused remnants of the hosts-config bits

Hosts entries are used to be configured via tripleo_ansible's
tripleo_hosts_entries.

Ifd4bc4ce5618587c341ecbf37f82777ae6fc2f4a removed the use
of WRITE_HOSTS, which currently makes hosts-config.yaml "headless" and
taking no real data for the hosts-config.sh template that generates
outputs for OS::TripleO::Hosts::SoftwareConfig.

Also I606e0f27f9f9ae9d85bc0fc653f8985eb734d004 removed the use of
HOST_ENTRY, which makes the hosts-config.sh taking an empty value for
it.

Probably that all makes it safe now to remove any use of
hosts-config.sh and hosts-config.yaml and corresponding
OS::TripleO::Hosts::SoftwareConfig completely.

Change-Id: Id04767ae0c32caf62271cf564608350974fefd1b
Signed-off-by: Bogdan Dobrelya <bdobreli@redhat.com>

common/deploy-steps.j2

@@ -404,7 +404,6 @@ outputs:
       container_puppet_script: {get_file: ./container-puppet.sh}
       all_nodes_validation_script.sh : {get_file: ../validation-scripts/all-nodes.sh}
       deploy-artifacts.sh : {get_file: ../puppet/deploy-artifacts.sh}
-      hosts-config.sh: {get_file: ../scripts/hosts-config.sh}
       generate-config-tasks: {get_file: generate-config-tasks.yaml}
       host-container-puppet-tasks: {get_file: host-container-puppet-tasks.yaml}
       deploy_steps_playbook:

hosts-config.yaml

@@ -1,38 +0,0 @@
-heat_template_version: rocky
-description: 'All Hosts Config'
-
-parameters:
-  hosts:
-    type: string
-
-resources:
-
-  hostsConfigImpl:
-    type: OS::Heat::SoftwareConfig
-    properties:
-      group: script
-      config:
-        str_replace:
-          params:
-            WRITE_HOSTS:
-              list_join:
-                - ' '
-                - str_split:
-                  - '\n'
-                  - {get_param: hosts}
-          template: {get_file: scripts/hosts-config.sh}
-
-outputs:
-  config_id:
-    description: The ID of the hostsConfigImpl resource.
-    value:
-      {get_resource: hostsConfigImpl}
-  hosts_entries:
-    description: |
-      The content that should be appended to your /etc/hosts if you want to get
-      hostname-based access to the deployed nodes (useful for testing without
-      setting up a DNS).
-    value: {get_param: hosts}
-  OS::stack_id:
-    description: The ID of the hostsConfigImpl resource.
-    value: {get_resource: hostsConfigImpl}

overcloud-resource-registry-puppet.j2.yaml

@@ -5,7 +5,6 @@ resource_registry:
   OS::Heat::StructuredDeployment: config-download-structured.yaml
   OS::TripleO::PostDeploySteps: common/post.yaml
   OS::TripleO::AllNodesDeployment: OS::Heat::None
-  OS::TripleO::Hosts::SoftwareConfig: hosts-config.yaml
   OS::TripleO::DefaultPasswords: default_passwords.yaml
   OS::TripleO::RandomString: OS::Heat::RandomString
 

scripts/hosts-config.sh

@@ -1,47 +0,0 @@
-#!/bin/bash
-set -eux
-set -o pipefail
-
-write_entries() {
-    local file="$1"
-    local entries="$2"
-
-    # Don't do anything if the file isn't there
-    if [ ! -f "$file" ]; then
-        return
-    fi
-
-    if grep -q "^# HEAT_HOSTS_START" "$file"; then
-        temp=$(mktemp)
-        (
-        sed '/^# HEAT_HOSTS_START/,$d' "$file"
-        echo -ne "\n# HEAT_HOSTS_START - Do not edit manually within this section!\n"
-        echo "$entries"
-        echo -ne "# HEAT_HOSTS_END\n\n"
-        sed '1,/^# HEAT_HOSTS_END/d' "$file"
-        ) > "$temp"
-        echo "INFO: Updating hosts file $file, check below for changes"
-        diff "$file" "$temp" || true
-        cat "$temp" > "$file"
-    else
-        # NOTE(aschultz): we purge any entries in the hosts file that match
-        # the existing short hostname on initial installation only. This
-        # prevents existing data from coming through and causing deployment
-        # issues when services (I'm looking at you rabbitmq) start up.
-        sed -i "/$(hostname -s)/d" "$file"
-        echo -ne "\n# HEAT_HOSTS_START - Do not edit manually within this section!\n" >> "$file"
-        echo "$entries" >> "$file"
-        echo -ne "# HEAT_HOSTS_END\n\n" >> "$file"
-    fi
-
-}
-
-hosts="$HOSTS_ENTRY"
-if [ ! -z "$hosts" ]; then
-    for tmpl in /etc/cloud/templates/hosts.*.tmpl ; do
-        write_entries "$tmpl" "$hosts"
-    done
-    write_entries "/etc/hosts" "$hosts"
-else
-    echo "No hosts in Heat, nothing written."
-fi