[yocto] [update-rc.d][PATCH V3] update-rc.d: support enable/disable options

[Richard Purdie]

On Tue, 2019-04-30 at 14:56 +0800, changqing.li at windriver.com wrote:
> From: Changqing Li <changqing.li at windriver.com>
> 
> Add support of enable/disable options, refer
> https://manpages.debian.org/wheezy/sysv-rc/update-rc.d.8.en.html
> 
> With support of these options, the usr can never change an existing
> configuration even after upgrading a package. The program will only
> install links if none are present, otherwise, it will keep
> the previous configuration.
> 
> preinst in update-rc.d.bbclass will delete all the links under
> rcrunlevel.d, this behavior now conflicts with enable/disable
> options. so remove preinst from the update-rc.d.bbclass
> 
> [Yocto 12955]
> 
> Signed-off-by: Changqing Li <changqing.li at windriver.com>

Merged, thanks, sorry about the delay.

Richard