docker service update and scale not working, easy fix inside

[dmitriikeler]

docker service scale
Do not need to call docker_service_flags.rb function to compose service flags variable.
A simple fix is to change $exec_scale to "${docker_command} scale ${service_name}=${replicas}"

docker service update
docker_service_flags.rb checks if host_socket param is a string with value 'undef' and adds a flag with host_socket value if it is not. Since host_socket parameter is not passed when the function is called it is empty, so docker_service_flags always adds -H ''' to update command

host_socket parameter should be added when calling the function
$docker_service_flags = docker_service_flags({
detach => $detach,
env => $env,
service_name => $service_name,
label => $label,
publish => $publish,
replicas => $replicas,
tty => $tty,
user => $user,
workdir => $workdir,
extra_params => any2array($extra_params),
image => $image,
host_socket => $host_socket,
})

[scotty-c]

This is now merged to master