juju: add bash completion

Closes #24610.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
zeromq 4.0.1

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
czmq 2.0.2

Closes #23607.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
zeromq: optional libsodium dependency

Closes #23180.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
zeromq 4.0.2

Closes #24635.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
mongrel2: patch to build against libzmq 4

Signed-off-by: Adam Vandenberg <flangy@gmail.com>