Use 8443 as the default port everywhere

I missed a few spots last time around.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Rename "lxc remote rm" to "lxc remote remove"

We may want to support aliases / common abreviations later (as git
does), but for now, let's stick to the spec.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Store all certificates PEM encoded

Closes #86

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>