Fix for .keystore missing + Fix for apm-server issue

scripts/setup-apm_server.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+set -euo pipefail
+
+cacert=/usr/share/apm_server/config/ca/ca.crt
+# Wait for ca file to exist before we continue. If the ca file doesn't exist
+# then something went wrong.
+while [ ! -f $cacert ]
+do
+  sleep 2
+done
+ls -l $cacert
+
+es_url=https://elasticsearch:9200
+# Wait for Elasticsearch to start up before doing anything.
+
+
+while [[ "$(curl -u "elastic:${ELASTIC_PASSWORD}" --cacert $cacert -s -o /dev/null -w '%{http_code}' $es_url)" != "200" ]]; do
+    sleep 5
+done
+
+# Set the password for the apm_server user.
+# REF: https://www.elastic.co/guide/en/x-pack/6.0/setting-up-authentication.html#set-built-in-user-passwords
+until curl -u "elastic:${ELASTIC_PASSWORD}" --cacert $cacert -s -H 'Content-Type:application/json' \
+     -XPUT $es_url/_xpack/security/user/apm_server/_password \
+     -d "{\"password\": \"${ELASTIC_PASSWORD}\"}"
+do
+    sleep 2
+    echo Retrying...
+done
+
+
+echo "=== CREATE Keystore ==="
+if [ -f /config/apm_server/apm-server.keystore ]; then
+    echo "Remove old apm-server.keystore"
+    rm /config/apm_server/apm-server.keystore
+fi
+/usr/share/apm_server/bin/apm_server-keystore create
+echo "Setting elasticsearch.password: $ELASTIC_PASSWORD"
+echo "$ELASTIC_PASSWORD" | /usr/share/apm_server/bin/apm_server-keystore add 'elasticsearch.password' -x
+
+mv /usr/share/apm_server/data/apm-server.keystore /config/apm_server/apm-server.keystore