Add the incoming key to the trustdb with ultimate trust. I noticed
this when using this role in a job that rechecks the signatures made
with an imported key (c.f Id624aa1ec6213be70809a8f911ab4aadc8a6ed53
and related changes).
Remove "--allow-secret-key-import" as it doesn't do anything any more,
per the man page.
Change-Id: I5fce163bce5c68342a444c36d9ba4af6e4af362c
Current usage of gpg keys involves a single role that adds, signs,
and removes the key all in one. Some jobs may need the GPG key
installed normally onto the remote host, then left in place, and
later removed. This change facilitates that.
Change-Id: I2f13f0c4de91808ba1bbdcc0fd20a547e43d602b