bump ansible version to 2.4.3
bump ansible version to 2.4.3

Signed-off-by: Matt Andrews <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@mattandrews.id.au>

djtfmartin/ala-install,sadeghim/ala-install,AtlasOfLivingAustralia/ala-install,djtfmartin/ala-install,AtlasOfLivingAustralia/ala-install,AtlasOfLivingAustralia/ala-install,djtfmartin/ala-install,sadeghim/ala-install,AtlasOfLivingAustralia/ala-install,sadeghim/ala-install,AtlasOfLivingAustralia/ala-install,sadeghim/ala-install,djtfmartin/ala-install