image.bbclass: Add EXTRA_DEBUG_PACKAGES to DEPENDS

Add EXTRA_DEBUG_PACKAGES to RDEPENDS so that they get build and we can install
them when  debug file-system is created

Jira: http://jira.alm.mentorg.com:8080/browse/SB-1952

Signed-off-by: Fahad Usman <fahad_usman@mentor.com>
connman: Install service script to systemd_unitdir.

This will allow better functioning with multilib builds.

Signed-off-by: Drew Moseley <drew_moseley@mentor.com>
mel: add STAMPCLEAN to BB_HASHBASE_WHITELIST

This keeps STAMPS_DIR from leaking into the do_configure checksum, which
disrupts the ability to use bitbake -S or bitbake-whatchanged to examine
checksum differences, at a minimum. This is going upstream, courtesy Robert
Yang, but let's work around it in the meantime. Drop when we update our
upstream layers again.

JIRA: SB-2044

Signed-off-by: Christopher Larson <kergoth@gmail.com>