Revert "[litevirt] Move libvirtd utils out of project"

This reverts commit 2d0d6ea862820d59d80b3b2e620e14023190697a.
Revert "[litevirt] Move rd_NO_LVM out of boot options"

This reverts commit d7643499b11ede63da936610bebf169ce4ca7f2f.
[litevirt] Initially add litevirt-pkgs.ks
[litevirt] Initially add litevirt-install.ks
[litevirt] Add kickstart framework for litevirt
[litevirt] Add litevirt-ovirt18-minimizer.ks
[litevirt] Keep ovs module
[litevirt] Allow customized repo for litevirt