This changes deb and rpm packaging to build the UI using npm and bundle
it in the `cloudstack-management` package and a new `cloudstack-ui`
package. The `cloudstack-ui` package will install the UI under
`/usr/share/cloudstack-ui/`. For both packages the config.json will not
be overridden on upgrade and hosted at /etc/cloudstack/management
for the cloudstack-mangement package, and at /etc/cloudstack/ui for the
cloudstack-ui package. The cloudstack-ui package is for advanced users
who only want the UI want to setup reverse proxy (separate hosting of UI).
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
