Resolves #129
Resolves #121
Resolves #82
Resolves #269 (possibly)

Applies migration fixes for each system
----------------------------------------

Fixes OpenSSL packages on all systems

Improves `provision` tmp space usage
------------------------------------

Wipes staging area between builds in `cmd.provision` to maintain adequate space
in limited C3/C4 `tmp` ramdisks.

Adds host-specific post-deploy action scripts.
----------------------------------------------

In particular, this resolves #231 by allowing the last summitdev deploy job to
run an LMOD cache update script after the job exits successfully.

This same behavior can be customized and generalized to each host that needs
post-deploy commands to be run.

Reorganizes job names
---------------------

New naming scheme:
- avoids unintentional job collapses in pipeline view
- allows for jobs that do not require a specific tier identifier to be
  constructed in the same manner as staging and deploy jobs. In part...