f03a3a5be4
some changes including:
1) update the wrong reference link to json file
2) Add /v2.1/{tenant_id}/os-hypervisors/detail
3) Add /v2.1/{tenant_id}/os-hypervisors/{hypervisor_id}/search
4) Add /v2.1/{tenant_id}/os-hypervisors/{hypervisor_id}/servers
Part of bp:api-ref-in-rst
Change-Id: I73fbf4583cd75afb2f60c57acd1bdb179f86a9e9