deploy kubernetes in XCI

This commit introduces kubespray into XCI.
k8s install currently assumes k8s install
and OpenStack install cannot coexist.
If XCI_INSTALLER is set to "kubespray" and
DEPLOY_SCENARIO is set to "k8-nosdn-nofeature"
the xci-deploy.sh would install kubernetes instead of OpenStack.
The version of kubernetes is beta release v1.9.0 currently
according to the master of kubespray
it only support the ubuntu now.
Opensuse and centos still need to develop and test.

This patch create the directory xci/installer/kubespray,
the related files of kubespray would be placed to it.
The xci/installer/$installer/playbooks/configure-localhost.yml was moved
to xci/playbooks/configure-localhost.yml as a common yaml file.

You can modify some parameters according your need
in xci/installer/kubespray/files/k8s-cluster.yml to deploy cluster.
When deploying kubernetes,
it would download the kubespray to releng-xci/.cache/repos/kubespray.
If your flavor is Ha, it will download haproxy_server and keepalived
to xci/playbook/roles, which setup haproxy service for kubernetes.

Change-Id: I24d521a735d7ee85fbe5af8c4def65f37586b843
Signed-off-by: wutianwei <wutianwei1@huawei.com>

Rename variable OPNFV_SCENARIO to DEPLOY_SCENARIO

Rest of the OPNFV projects use the variable DEPLOY_SCENARIO so
XCI should be aligned with them as well even though OPNFV_SCENARIO
fits better than DEPLOY_SCENARIO.

Change-Id: Id48c41fa8a1fa9493cfc7a4906f64b6d8ed27d64
Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

Merge "Move contents of os-nosdn-ovs into  os-nosdn-nofeature"

Move contents of os-nosdn-ovs into  os-nosdn-nofeature

This change fixes the scenario os-nosdn-nofeature by
moving directories/files from os-nosdn-ovs to os-nosdn-nofeature.
The contents of the files and variables are also either adjusted
or removed in order to prevent impacts on CI.

Change-Id: Icfde27f413c8f93d097f9f262c8cb1230b7fe59d
Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

Adapt to updated REST URL for OpenDaylight

Change-Id: Iae7ca106174c09a73bc72075dca0a753c2280f20
Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

add os-odl-nofeature scenario

Change-Id: I1355f4beb061caab7315b6f619a96cfaa9f52d2b
Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

add os-nosdn-ovs scenario

This scenario is to install ovs on neutron agent and compute nodes for
providing networking capabilities without being managed by Opendaylight.

Change-Id: Iacc2f61ce1ffca248acdca378a23d65a91452828
Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

Create the basic structure for generic scenarios

Change-Id: I158d4e61e627e47ffa89d8229280011a2b615cac
Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>