The old instance reservation feature is not supported from the
Ocata release of Blazar, since it relies on the v2 API of Nova
with has been removed. Additionally, the Blazar project has
started to implement a new instance reservation feature which
doesn't rely on deprecated Nova APIs.
This patch removes the old instance reservation plugin. If a
deployer specifies 'basic.vm.plugin' in the plugins config
parameter, the blazar-manager service will fail to start.
Partially implements: blueprint new-instance-reservation
Change-Id: If5b0efb4910b05cc3c2881bb705953528895f277
31f88379b8