Get rid of more auditallow spam

Addresses the following audit messages:

[    7.984957] type=1400 audit(33873666.610:40): avc: granted { getattr
} for pid=1 comm="init" name="system@framework@boot-ext.art" dev="dm-2"
ino=106324 scontext=u:r:init:s0
tcontext=u:object_r:dalvikcache_data_file:s0 tclass=file

[   65.528068] type=1400 audit(1477751916.508:96): avc: granted { search
} for pid=6330 comm="main" name="/" dev="cgroup" ino=12428
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=dir

[   65.530425] type=1400 audit(1477751916.508:97): avc: granted { search
} for pid=6330 comm="main" name="/" dev="cgroup" ino=12428
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=dir

[   65.530487] type=1400 audit(1477751916.508:98): avc: granted { open }
for pid=6330 comm="main" path="/dev/cpuctl/tasks" dev="cgroup" ino=12429
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=file

[   65.530800] type=1400 audit(1477751916.508:98): avc: granted { open }
for pid=6330 comm="main" path="/dev/cpuctl/tasks" dev="cgroup" ino=12429
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=file

[   65.530842] type=1400 audit(1477751916.508:99): avc: granted { search
} for pid=6330 comm="main" name="/" dev="cgroup" ino=12428
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=dir

[   65.531138] type=1400 audit(1477751916.508:99): avc: granted { search
} for pid=6330 comm="main" name="/" dev="cgroup" ino=12428
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=dir

[   65.531176] type=1400 audit(1477751916.508:100): avc: granted {
search } for pid=6330 comm="main" name="bg_non_interactive" dev="cgroup"
ino=12444 scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0
tclass=dir

[   65.531465] type=1400 audit(1477751916.508:100): avc: granted {
search } for pid=6330 comm="main" name="bg_non_interactive" dev="cgroup"
ino=12444 scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0
tclass=dir

[   65.531502] type=1400 audit(1477751916.508:101): avc: granted { open
} for pid=6330 comm="main" path="/dev/cpuctl/bg_non_interactive/tasks"
dev="cgroup" ino=12445 scontext=u:r:dumpstate:s0
tcontext=u:object_r:cgroup:s0 tclass=file

[   65.531789] type=1400 audit(1477751916.508:101): avc: granted { open
} for pid=6330 comm="main" path="/dev/cpuctl/bg_non_interactive/tasks"
dev="cgroup" ino=12445 scontext=u:r:dumpstate:s0
tcontext=u:object_r:cgroup:s0 tclass=file

[   65.531827] type=1400 audit(1477751916.508:102): avc: granted {
search } for pid=6330 comm="main" name="/" dev="cgroup" ino=12459
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=dir

[   65.713056] type=1400 audit(1477751916.508:102): avc: granted {
search } for pid=6330 comm="main" name="/" dev="cgroup" ino=12459
scontext=u:r:dumpstate:s0 tcontext=u:object_r:cgroup:s0 tclass=dir

Bug: 32246161
Test: policy compiles
Test: dumpstate no longer generates the audit messages above.
Change-Id: Id5afe2ebeb24f8a7407aac1a0a09806b1521b0e4