This should work for you.
- lineinfile: dest=/var/lib/dpkg/arch line="amd64" create=yes
- lineinfile: dest=/var/lib/dpkg/arch line="i386" create=yes
register: add_i386
- apt: name={{item}} update_cache={{add_i386.changed}}
with_items: ['libc6:i386', 'libstdc++6:i386', 'zlib1g:i386']
source
share