Useless option mute_weight_value

[Alvaro Lopez]

The 'mute_weight_value' option for the 'MuteChildWeigher' weigher is useless.

This configuration option was used to artificially inflate the returned weight for a cell that was unavailable, but it is not needed anymore and a multiplier should be used instead. Since the normalization process is already in place, this variable has no effect at all and a muted child will get a weight of 1.0 regardless of the 'mute_weight_value'.

[Alvaro Lopez (aloga)]

This has a change submitted here: https://review.openstack.org/#/c/55873/

The sync between gerrit and launchpad did nor work for this ticket for some reason.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/55873
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=2399d085f40e201754c8a6af5bdbffbf7a863d5e
Submitter: Jenkins
Branch: master

commit 2399d085f40e201754c8a6af5bdbffbf7a863d5e
Author: Alvaro Lopez Garcia <email address hidden>
Date: Mon Nov 11 17:21:00 2013 +0100

    Scheduler: deprecate mute_weight_value option on weigher

    The nova.cells.weights.mute_child.MuteChildWeigher used a large
    mute_weight_value flag to inflate the weigher's value. This was needed
    before weight normalization was in place, so that the weigher could win
    against other weighers. Now, with weight normalization in place this is
    not needed any more, since the maximum value that a weigher would take will
    be 1.0 (weights are normalized between 0.0 and 1.0). We should use the
    multiplier to get the same behavior (i.e. make the weigher prevail
    against other weighers), the multiplier has been also increased so
    that it actually mutes the other weighers an does not break backwards
    compatibility.

    DocImpact: The mute_weight_value has been marked as deprecated so the
    operators need to adjust the mute_weight_multiplier to a proper value if
    they weren't using the defaults.

    Closes-Bug: #1340068
    Change-Id: Idebd7649909567034b01ce04416ce315fb936b17