wr-installer feature: custom installer.conf is not available
According to wrlinux-x/layers/wr-installer/README and wrlinux-x/layers/wr-installer/installer.md, the custom installer.conf should be available to help speed up the installtion process. But it was not available now. Just submit this defect as Robert's suggestion.
## Adding custom installer.conf to installer image
The intaller script can read answers from /etc/installer.conf to help
speed up the installation process. To add one to the installer image
requires the user to either copy the file to their project directory and/or
configure their local.conf file.
cp <path>/installer.conf <installer_build_dir>/bitbake_build/conf/.
or
edit <installer_build_dir>/bitbake_build/conf/local.conf
WRL_INSTALLER_CONF = "/my/installer.conf"
1. Please check wrlinux-x/layers/wr-installer/README and wrlinux-x/layers/wr-installer/installer.md and refer to custom installer.conf
