* simplified the tooling a bit: use coolconfig for creating
RSA key pairs for WOPI Proof headers.
* got rid of a dependency: ssh-keygen, towards leaner docker images
Signed-off-by: Andras Timar <andras.timar@collabora.com>
Change-Id: Iaf468b5c8585d45027f512bb0a287ab77afb1ea9