Minor
Without metadata, profile merges concat sequences
Just use the :user profile rather than :integ-options
We need to include :integs in :default profile for all

Every child integration project needs to override the :default to
include :integs. That enables all the more complex config, e.g. aliases
and dependencies, to be done in the parent integration-tests/ dir.
Update the rest of these guys to 0.3.7

We needed the fix that excludes :default from profile compression, so
that :default profile differences among children wouldn't surprise the
parent.