RN: Update bugs and known-issues for 1.7

Update the open bugs, the closed bugs on 1.7 cycle and
include one known issue on Hob.

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>
RN: Updates from bitbake-metadata2doc.sh

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>