Dictionary creation could be rewritten as a dictionary literal

[Ankit Agrawal]

There are several places where dict is created and then initialized with keys later.

for example.

test_metadef_resourcetypes.py module,
ResourceTypeController->index method.

filters = {}
filter['namespace'] = namespace

could be rewritten as

filters = {'namespace': namespace}

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/210303
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=16ab5d7c1781626293ec67b57f66dbfcc3cd2176
Submitter: Jenkins
Branch: master

commit 16ab5d7c1781626293ec67b57f66dbfcc3cd2176
Author: ankitagrawal <email address hidden>
Date: Wed Aug 5 05:20:51 2015 -0700

    Use dictionary literal for dictionary creation

    Dictionary creation could be rewritten as a dictionary literal.
    for example:

    filters = {}
    filter['namespace'] = namespace

    could be rewritten as

    filters = {'namespace': namespace}

    Closes-Bug: 1482586
    Change-Id: I860483e958296da248a579a6032c14370843d9e4