Remove deprecated compute config options for validation

Below compute config options for validation server had been
deprecated with corresponding options in validation group almost
year back.
- I1908e37d2551760831e338788511db93d5129e16

    - ``compute.use_floatingip_for_ssh`` (available as ``validation.connect_method``)
    - ``compute.ssh_auth_method`` (available as ``validation.auth_method``)
    - ``compute.image_ssh_password`` (available as ``validation.image_ssh_password``)
    - ``compute.ssh_shell_prologue`` (available as ``validation.ssh_shell_prologue``)
    - ``compute.ping_size `` (available as ``validation.ping_size``)
    - ``compute.ping_count `` (available as ``validation.ping_count``)
    - ``compute.floating_ip_range `` (available as ``validation.floating_ip_range``)

This patch removes them from tempest conf.

Devstack and all plugins are good on those config options.

Few options are also deprecated same time but those are being
used in some plugin and will be removed in next commit with fix
in corresponding plugins.

Change-Id: Ia601e8e08284beceff0e2d02182cedc684044ec2
2 files changed