sidecar: Add alternatives/hacks used today
sidecar: Add alternatives/hacks used today

Reviewed-by: Joseph-Irving <ee1cbd3ef96359f70530ab0e0ab7233b08f3dc8f@gmail.com>
Signed-off-by: Rodrigo Campos <6dfa9cecb562e345739f2e4eb69e9ebd0fbff687@kinvolk.io>

kubernetes/enhancements,kubernetes/enhancements,kubernetes/enhancements