Remove errant echo_summary calls

Fixes bug 1161545

Change-Id: Ic3979159bf76b87430c551b2e72323a3fe230cda
Cut over to grizzly -> havana

* change BASE_RELEASE and TARGET_RELEASE in grenaderc
* remove work-arounds from devstack.localrc.target
* remove upgrade steps from the upgrade-* scripts
* change references to release names in variables to BASE_ and TARGET_
* remove Javelin check from check-sanity, will return in verify-javelin
  in https://review.openstack.org/#/c/26257/

Fixes bug 1175340

Change-Id: If1523c73ebefeaf3d3e3efdfbc053f47365d123a
Fix setup-grenade to pass user and host as parameter

setup-grenade was not working when defining a different username/host
when running ./setup-grenade <host> [<user>].

Change-Id: Ie9590878dafbdd2e3ff8b2d9779be6cdefe671b6
Fix: kill screen on stop-base

The screen name can be different from 'stack' in grenade.
Change it to use the global variable.

Change-Id: I57d55b2713dec26140a94c28c4fd373f8989cef7
Blueprint: blueprint/nightly-upgrade-testing
Ensure default flavor is set when upgrading tempest

Add DEFAULT_INSTANCE_TYPE to upgrade tempest to ensure this is
set. This avoids recreation of existing flavors when upgrading
tempest.

Change-Id: If2e872132939faa4b8afc8dc9b7d7d9aeb026c96
Fix: Bug 1178028
Merge "Remove errant echo_summary calls"
Merge "Fix setup-grenade to pass user and host as parameter"
Merge "Fix: kill screen on stop-base"
Merge "Ensure default flavor is set when upgrading tempest"