Implement custom step ShellCommandAndSetProperty, as an extension of
ShellCommand with the addition of setting a bool property that is set
True or False if the shell command succeeded or not.

Signed-off-by: Christian Marangi <[email protected]>

OPKG gets confused if kmod packages are present in both, target packages
as well as kernel version specific folder.
Remove them from target packages to make opkg pick the kmods from kmod
archive folder only.

This also affects APK that picks packages from the first entry in the
repository file and doesn't support checking the same package from
multiple entry.

Signed-off-by: Daniel Golle <[email protected]>
[ add --remove-source-files and improve implementation ]
Signed-off-by: Christian Marangi <[email protected]>

Add additional logic to merge the sha256sums with the remote kmods entry
(in remote sha256sums) already present.

This is to produce a more consistent sha256sums that actually reflect
what is present in the remote server by including also the sha of the
kmods for each kernel version supported.

Signed-off-by: Christian Marangi <[email protected]>

There is currently a BUG in the --exclude pattern for the targetupload step.
The /kmods/ directory is actually never excluded. This was never notice
as the rsynclist never actually had kmods entry as make checksum step
was done before moving the kmods to the dedicated directory.

This is caused by the fact that with --files-from, not only the /kmods/
directory needs to be excluded but also every content in it, hence the
additional --exclude "/kmods/**" is required to correcly skip the entry
present in rsynclist.

Signed-off-by: Christian Marangi <[email protected]>

Handle case where a sha256sums might contain previous kmods/. In such
case packages.adb for previous kmods/ needs to be skipped as not
included in the sign tar and already signed by previous runs.

Skip is limited to kmods/ entry as those are the only entry expected to
be present in the sha256sums but not included in sign tar.

Signed-off-by: Christian Marangi <[email protected]>