Add a service_mananger class with the verb add.
Add a type that groups the services for each of the
processes that is allowed to start services in service.te
and an attribute for all services controlled by the service
manager. Add the service_contexts file which maps service
name to target label.

Bug: 12909011
Change-Id: I017032a50bc90c57b536e80b972118016d340c7d

Resolves denials such as:
avc:  denied  { read } for  pid=752 comm="ActivityManager" name="stat" dev="proc" ino=1878 scontext=u:r:system_server:s0 tcontext=u:r:inputflinger:s0 tclass=file
avc:  denied  { open } for  pid=752 comm="ActivityManager" name="stat" dev="proc" ino=1878 scontext=u:r:system_server:s0 tcontext=u:r:inputflinger:s0 tclass=file
avc:  denied  { search } for  pid=752 comm="ActivityManager" name="214" dev="proc" ino=1568 scontext=u:r:system_server:s0 tcontext=u:r:inputflinger:s0 tclass=dir
avc:  denied  { read } for  pid=752 comm="ActivityManager" name="stat" dev="proc" ino=1878 scontext=u:r:system_server:s0 tcontext=u:r:inputflinger:s0 tclass=file
avc:  denied  { call } for  pid=187 comm="Binder_2" scontext=u:r:inputflinger:s0 tcontext=u:r:system_server:s0 tclass=binder

Change-Id: I099d7dacf7116efa73163245597c3de629d358c1
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

Otherwise we'll never see denials in userdebug or eng builds and
never make progress on confining it.  Of course we cannot truly
test until it is released into AOSP, but this prepares the way
and potentially allows for internal testing and collection of denials.

Change-Id: I800ab23baee1c84b7c4cf7399b17611a62ca6804
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

Add a placeholder domain for inputflinger.
Mark it initially unconfined and enforcing.

Change-Id: I433fd9e1954486136cb8abb084b4e19bb7fc2f19