/usr/lib/systemd/system/elasticsearch.service comes with a
TimeoutStartSec=75, which is not enough time for a somewhat busy
E5-2430L v2 @ 2.40GHz to get things going.
We don't want to permanently override that with a default of 75 in
case they decide to bump or remove that timeout in the future.
Change-Id: Ida8668f5548a15a8f597839bd9002585aeea5d1a
de88293f24