Fix ASP.NET

[hamiltont]

Replaces #1287

Introduces a new function fw_apt_to_iroot that uses apt-get to download a deb file, and dpkg -x to extract it, all without using sudo. See #1479

Using this method we can download the latest available binaries for mono

Humorously (after the intense discussion over sudo in #1287) this actually uses sudo, but only for adding the package repository to apt's list of package locations, which is a pretty innocuous change to the base OS. Perhaps a later version of the fw_apt_to_iroot function can find a way to use a package repo without using sudo to add it to /etc/apt/sources.list.d/

[hamiltont]

my travis run

[hamiltont]

my travis run

[hamiltont]

Travis passed, except for mongodb (which failed to start as shown by mongodb: is _NO_ GO!: ERROR: [Errno 111] Connection refused).

[hamiltont]

Travis passed, except for mongodb (which failed to start as shown by mongodb: is _NO_ GO!: ERROR: [Errno 111] Connection refused).

[hamiltont]

ping @pdonald - in case you have any remaining feedback

[hamiltont]

ping @pdonald - in case you have any remaining feedback

[hamiltont]

Last travis shows full green on aspnet except for what I think is a spurious failure on aspnet-mono-mysql-entityframework's fortunes (which have PASSed multiple times before). Merging as better than current

[hamiltont]

Last travis shows full green on aspnet except for what I think is a spurious failure on aspnet-mono-mysql-entityframework's fortunes (which have PASSed multiple times before). Merging as better than current