* Update requirements.txt to pin charm-tools to 2.8.3
* Update tox.ini to change the build parameters.
* This upgrades from <2.7 which adds reproducible charms
* Bug was fixed that controlled the default output directory
doesn't get 'builds' appended. The tox change puts it
back so that stable & master both build to the same
directory. This may be reviewed in the future.
Change-Id: If175d58b7b663927d7e7be1c44550a9b8aaa5d79
This is a barebones charm (as part of this commit) which only connects to the
prinical barbican charm and announces its name (as softhsm). Next steps are to
install and configure the software for the softhsm and determine what should go
across the charm relation.