Updated go and docker version for build slaves
Updated go and docker version for build slaves

Updated go to 1.10 and docker-compose to 1.20.1

Signed-off-by: Alf-Rune Siqveland <b1dbd7907dc95f5f5f4381bda73a0d3f9f14b3c6@northern.tech>

mendersoftware/meta-mender-qemu