Add info about k8s 1.11+ config file to docs
Add info about k8s 1.11+ config file to docs

Add informations about k8s 1.11+ preferred configuration file to
MANUAL_INSTALL documentation.

Signed-off-by: Tomas Slusny <71c4488fd0941e24cd13e3ad13ef1eb0a5fe5168@gmail.com>

rastislavszabo/vpp,rastislavszabo/vpp,rastislavszabo/vpp,milanlenco/vpp-1,brecode/vpp,milanlenco/vpp-1,milanlenco/vpp-1,milanlenco/vpp-1,rastislavszabo/vpp,brecode/vpp,milanlenco/vpp-1,brecode/vpp,rastislavszabo/vpp,rastislavszabo/vpp,brecode/vpp,rastislavszabo/vpp,brecode/vpp