Better handling of static routes in debian/ubuntu

* Indent the up and down lines for static routes in the interfaces files to match the indentation of the rest of the interface stanza, not required, but better for readability
* Switch to post-up and pre-down instead of up and down for adding and removing routes, to prevent a possible race condition of adding or removing a route on an interface, when the interface is not ready
* append "|| true" to the end of the up and down commands. If the command was to return a non-zero exit code, interfaces could be left in an inconsistent state, unable to be managed by ifup/ifdown. This can happen if the route is missing when the down command runs to delete the route, or if the route exists when the up command runs to add the route. Appending "|| true" forces a 0 exit code to be returned. Errors from the route command are still sent to stderr, but do not cause interface management operations to fail non-gracefully.
Merge pull request #8 from sivel/debian-network-static-routes

Better handling of static routes in debian/ubuntu
Merge pull request #23 from rackerlabs/gentoo-init

Gentoo Init changes for depend() block
fixing existing test BSD:net for static routes commit#f7bc484
fixing confusing display ERROR log from json_parser tests
fixed Gentoo:Network feature from pull-request#4
commands/gnetoo/network fixing typo list.extend => list.append for _headers
commands/gnetoo/network fixing commenting for _header
fixing test test_resetnetwork_hostname for Gentoo based on RegEx
commands/gentoo/network.py corrected dns_%s var generation
commands/gentoo/network.py : for resolv fixing case for HOSTNAME
fixing commands.gentoo.network resetnetwork hostname
corrected test_resetnetwork_interfaces as per Gentoo specific pull-request changes
Merge pull request #24 from rackerlabs/gentoo-network

Gentoo Network changes and updates spiraled from Pull-Request#4
gitignore updated for *pyc and .idea
scripts:generic updated to use nova-agent and system py libs in that order
scripts:gentoo for NOVA_PYTHONPATH config from nova/lib dir not system python