ConnectivtyService : Execute connectivityCheck in thread pool

Since this async task takes long when doing things like waiting for
network connectivity...etc, rather than holding up the single executor
of async task for the framework (app_process), run it on a thread from
the pool so other tasks can execute in parallel.

Change-Id: I7b88a4837c7e117ef47014a20c57f828b811edfb
base: Add blacklist provider permission

Change-Id: I4febc2c0aa1a690d607b2a459e2d60d30ecf5abf
JIRA: CYAN-3727
Issue: https://jira.cyanogenmod.org/browse/CYAN-3727
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "base: Add blacklist provider permission" into cm-11.0
Merge "ConnectivtyService : Execute connectivityCheck in thread pool" into cm-11.0
Merge cm 'branch cm-11.0' into dcm-wip