Add support for boolean configuration parameters

[Khyati Sheth]

Currently if configuration parameter is specified as a boolean, it is converted to an int and we need to specify min, max constraints for integer. i.e. for boolean we need to specify min:0, max:1

This behavior is due to a bug in the code, where the int type is checked as isinstance(v, int). Since boolean is a subclass of int in Python, bool types are converted to int.

Fix :
Have isinstance(v, bool) check.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/78499

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/78499
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=481018d35410feccb1a219d2028870595dd34656
Submitter: Jenkins
Branch: master

commit 481018d35410feccb1a219d2028870595dd34656
Author: Khyati Sheth <email address hidden>
Date: Wed Mar 5 18:29:20 2014 -0800

    Remove Min/Max for Configuration Group Booleans

    boolean configuration-group parameters at the moment require a
    min/max value of 0/1 to work around some faulty logic that is
    meant to validate integer values, but instead validates integer
    and boolean values.

    Closes-Bug: #1288507
    Change-Id: I2d7556621e891b22291c7ef9e9c523e1ce98a047