Switch apt from using items to an inline list

[ansell]

The following new deprecation warning appeared when updating to Ansible-2.7.0, with a target removal release of 2.11. We use this pattern fairly often, but the changes are trivial in terms of complexity:

TASK [java : Install Oracle Java 8 (before possibly patching files)] [DEPRECATION WARNING]: Invoking "apt" only once while using a loop via squash_actions is deprecated. Instead of using a loop to supply multiple items and specifying `name: {{item}}`, please use `name: ['oracle- java8-installer', 'ca-certificates', 'oracle-java8-set-default']` and remove the loop. This feature will be removed in version 2.11. Deprecation warnings can be disabled by setting deprecation_warnings=False in ansible.cfg.