[ci] Temporarily disable scenario tests
[ci] Temporarily disable scenario tests

On rax nodes, the voting LVM job fails
consistently because the test node is
rebooted midway [1]

While we debug the issue, lets disable
scenario tests for this job, temporarily
while we identify the root cause and fix
the issue.

[1] https://launchpad.net/bugs/1886988

Change-Id: Icd3706d5c73116a8e16166229736ae485bb2b5c0
Signed-off-by: Goutham Pacha Ravi <23768c94a9ff9c3948f2b1373d75b7bec9121063@gmail.com>

openstack/manila,openstack/manila