This fixes a number of places where we do not have spaces between
filters. I think that this is a reasonable rule for readability (I
also think it probably was enforced, but maybe later versions got
better at detecting it?).
These are detected by a later version of Ansible lint; this change
should have no operational change to any roles but prepares us to
update in a follow-on change.
Change-Id: I07e1a109b87adce86f483d14d7e02fcecb8313d5