neverallow transitions to shell

Only a few daemons need transition to shell. Prevent
misuse and over-privileging of shell domain.

Signed-off-by: William Roberts <william.c.roberts@linux.intel.com>
(cherry picked from commit d1fa4d3d)

Bug: 21924438
Change-Id: I013143cc5ab1e95bf3f7388ce51619e0e3b18425