Return inventory objects in the order they are presented.  Additionally, fix host slicing such that it works on Python terms with
zero indexed lists and a non-inclusive final element.

Instantiating the Inventory class with host_list=None now results in an
empty inventory instead of an error.

covered to 100%

and ipv6 addresses.

If someone has a " #" in a quoted var string, it
will interpret that as a comment and refuse to
load the inventory file due to an unbalanced
quote. Noisy failure > unexpected behavior.

when defining group variables

This allows patterns such as webservers:!debian:&datacenter1 to target
hosts in the webservers group, that are not in the debian group, but are
in the datacenter1 group. It also parses patterns left to right.

  - Code, docs, tests.
  - Also added test of large range 000-142 to verify alpha range did not
    break this.

page.

Various retooling of the internal code behind inventory pattern matching in support of pending support
for host ranges.

to scripted inventory so need to investigate this.

commit 4430ce3eefcdff0b0ceffea0ef66ea8e876a807d
Merge: 631783b 649963c
Author: Michael DeHaan <michael.dehaan@gmail.com>
Date:   Thu Jul 12 01:28:43 2012 -0400

    Merge branch 'host-groups' of https://github.com/dagwieers/ansible into daggroups

commit 649963ca2c2610b97a90d2449132a57ae6b39ec9
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 23:01:00 2012 +0200

    Added comments in the example yaml file as requested

commit 7f9718f185ec991bc165c4a52b2468cf41f4c349
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 22:49:38 2012 +0200

    Add the default nose color too, to test specific overrides

commit eb63b9e899318ce0c26902ca73af50135a6224e4
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 22:44:35 2012 +0200

    Introduce comics and cartoons to test yaml groups defined on a per-node basis

commit aa13d233078b825a8057bebf35ed478342cf4e43
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 19:33:15 2012 +0200

    A small fix to revert to old state

commit 264ebaa77c4243f2e9117e8d1168dc2f2eed7ee2
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 19:31:51 2012 +0200

    Combine both yaml unit tests into one example file

commit 7db49a8048e78402c4c9a0a6cb2604689280fbbb
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 16:46:53 2012 +0200

    Might as well fix this too

commit f36c6c8c5b419865939c7e2b0b26f6c97255fdc8
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 16:42:00 2012 +0200

    Added unit tests for host-groups patch

    For the unit test I chose to keep the original yaml file in place as a reference.

    This patch also includes a fix.

commit a96f6813522c5ae8b2be4514a2de56a775c6b7b0
Author: Dag Wieërs <dag@wieers.com>
Date:   Thu Jul 12 12:30:43 2012 +0200

    Allow groups to be defined on a per-host basis

    This makes it possible to define on a per-host basis what groups a host is in.
    When managing a large set of systems it makes it easier to ensure each of the
    systems is defined in a set of groups (e.g. production/qa/development,
    linux/solaris/aix) rather than having to add systems to multiple disconnected
    groups.

    ----
      - host: system01

      - host: system02

      - host: system03

      - group: linux
        hosts:
        - system01
        - system02

      - group: solaris
        hosts:
        - system03

      - group: production
        hosts:
        - system01
        - system03

      - group: qa
        - system02

      - group: dbserver
        hosts:
        - system01

      - group: ntpserver
        hosts:
        - system02

      - group: webserver
        - system03
    ----

    Can be redefined as:

    ----
      - host: system01
        groups: [ linux, production, dbserver ]

      - host: system02
        groups: [ linux, qa, ntpserver ]

      - host: system03
        groups: [ solaris, production, webserver ]
    ----

Also change test name collision.

Add tests for new advanced inventory features (groups of groups, group variables) in the default INI format file.

Next up: YAML format.

format compatible with this still, and add some tests for INI-style groups of groups
and variables.