Required for role::cirrussearch
==> default: Error: Could not update: Execution of '/usr/bin/apt-get -q -y -o DPkg::Options::=--force-confold install wmf-elasticsearch-search-plugins' returned 100: Reading package lists... ==> default: Building dependency tree... ==> default: Reading state information... ==> default: E: Unable to locate package wmf-elasticsearch-search-plugins ==> default: Error: /Stage[main]/Role::Cirrussearch/Package[wmf-elasticsearch-search-plugins]/ensure: change from purged to latest failed: Could not update: Execution of '/usr/bin/apt-get -q -y -o DPkg::Options::=--force-confold install wmf-elasticsearch-search-plugins' returned 100: Reading package lists... ==> default: Building dependency tree... ==> default: Reading state information... ==> default: E: Unable to locate package wmf-elasticsearch-search-plugins
The package is present for jessie via [[https://apt.wikimedia.org/wikimedia/pool/component/elastic55/w/wmf-elasticsearch-search-plugins/|apt.wikimedia.org's component/elastic repo]], but not imported for stretch yet.