doc: Documenting " | args | " feature of edeploy
doc: Documenting " | args | " feature of edeploy

Kernel arguments surrounded by pipes will be propagated on the installed
hosts bootloader's configuration. A typical use case is to override the
default linux console to use the serial lines.

This feature wasn't documented making people not using it.

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