Add missing package configs to:
- Select shell integration
- Disable screen sharing module (independent from backend)
- Disable jpeg image support
`PACKAGECONFIG` default value is updated to enable these configs, since
they were previously implicitly enabled.
(From OE-Core rev: f883413b2bc6e7d0bd44ce8324cd36a8fe918e5f)
Signed-off-by: Guillaume Champagne <champagne.guillaume.c@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>