init: Reduce timeout on dhclient
init: Reduce timeout on dhclient

This patch setup the default timeout to 15 sec to avoid very long waits
at boot time

lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,enovance/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,lebauce/edeploy,lebauce/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy