Renaming NOS to Director
Moving PLUMgrid Director parameters to the common
configuration function

Fix bug #1198281

Change-Id: I5231950121cfaac9d2d8cc58c4e7b904ccaa9dce
Source linuxbridge_agent in linuxbridge plugin

devstack neutron lib needs to find some functions named
'neutron_plugin_configure_XXXXXX' in the neutron plugin lib
Part of them are usually in the plugin agent file.

For linuxbridge plugin some of theses functions are missing.
This change load the linuxbridge_agent file in linuxbridge file to make
missing functions available to neutron lib when linux bridge plugin is used.

Fix bug #1195237

Change-Id: I567bedc84e77c041e9418773fba1f74b33bcf604
xenapi: Exit immediately if zipball download fails

If install_os_domU.sh fails to download the Xapi plugins zipball
correctly it ignores the error and continues the installation.
This could damage the hypervisor's filesystem, as it may delete
files or overwrite them with garbage.

Change-Id: I9f6dc31b977592e2818e37b2d310c2a5dc477364
Fixes: bug #1195640
Merge "xenapi: Exit immediately if zipball download fails"
Merge "Source linuxbridge_agent in linuxbridge plugin"
Merge "Renaming NOS to Director Moving PLUMgrid Director parameters to the common configuration function"