Don't try to regenerate existing ssl certificates

Rerunning stack.sh after some failure unrelated to ssl setup will fail
due to certificates already existing in the CA index. Don't regenerate
them instead. This is a workaround making devstack development easier
rather than something typical user would run into.

Change-Id: Icfd4cb5132c8c9297eb73159e592b7006295184f
Migrate from using glance image-list to openstackclient

Modify instance of `glance image-list` to `openstack image list`,
in an effort to migrate all commands to unified CLI.

Change-Id: Ieef661d209606e088fbf6a3a394f9a6577667618
Sahara script modified with notification configuration

This change enable Sahara notifications if ceilometer is used

Partially implement: blueprint ceilometer-integration

Change-Id: I4ec79052194206481cfbbf0d848aa43bcb0c0660
Adds xiv_ds8k cinder driver support

To use xiv_ds8k, set the following in localrc:
CINDER_ENABLED_BACKENDS+=,xiv:<volume-type-name>
XIV_DRIVER_VERSION=<version-string>
SAN_IP=<storage-ip-or-hostname>
SAN_LOGIN=<storage-admin-account>
SAN_PASSWORD=<storage-admin-password>
SAN_CLUSTERNAME=<cluster-name>
CONNECTION_TYPE=<connection-type> iscsi|fc
XIV_CHAP=<chap-type> disabled|enabled

Change-Id: I084ad2b2cb8e34c4a8aed77a52e90f9a9739f1f3
Set suspend feature flag in tempest for ironic

Suspend isn't a feature supported by ironic/baremetal.

Change-Id: I49b3b07f9ffd3fcbda8e32e48dcf20062ac7f7d8
Merge "Set suspend feature flag in tempest for ironic"
Merge "Sahara script modified with notification configuration"
Merge "Migrate from using glance image-list to openstackclient"
Merge "Adds xiv_ds8k cinder driver support"
Merge "Don't try to regenerate existing ssl certificates"
Merge branch 'master' of https://github.com/openstack-dev/devstack