Description of problem:
possible policy change is questionable because the dir in /tmp should not have this context. actually it is backup made by root user which preserves original context.
it prevents tmpwatch from working correctly

on dir
  File: ‘/var/tmp/beakerlib-mRdwVgU/backup’
  Size: 16              Blocks: 0          IO Block: 4096   directory
Device: fd02h/64770d    Inode: 103254493   Links: 3
Access: (0755/drwxr-xr-x)  Uid: (19436/todoleza)   Gid: (19436/todoleza)
Context: system_u:object_r:root_t:s0
Access: 2014-07-03 15:02:15.448512353 +0200
Modify: 2014-06-26 17:07:26.455757725 +0200
Change: 2014-07-02 10:23:17.626811067 +0200
 Birth: -

grep tmpwatch /var/log/audit/audit.log | audit2allow

#============= tmpreaper_t ==============
allow tmpreaper_t etc_t:dir setattr;
allow tmpreaper_t root_t:dir setattr;
SELinux is preventing /usr/sbin/tmpwatch from 'setattr' accesses on the directory .

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that tmpwatch should be allowed setattr access on the  directory by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep tmpwatch /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:tmpreaper_t:s0-s0:c0.c1023
Target Context                system_u:object_r:root_t:s0
Target Objects                 [ dir ]
Source                        tmpwatch
Source Path                   /usr/sbin/tmpwatch
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           tmpwatch-2.11-5.el7.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-153.el7_0.10.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.10.0-123.4.2.el7.x86_64 #1 SMP
                              Thu Jun 5 21:43:43 EDT 2014 x86_64 x86_64
Alert Count                   1
First Seen                    2014-07-03 03:47:24 CEST
Last Seen                     2014-07-03 03:47:24 CEST
Local ID                      b90222d1-ccbd-4d30-b84e-cb5c290c52d2

Raw Audit Messages
type=AVC msg=audit(1404352044.377:1267): avc:  denied  { setattr } for  pid=20767 comm="tmpwatch" name="backup" dev="dm-2" ino=103254493 scontext=system_u:system_r:tmpreaper_t:s0-s0:c0.c1023 tcontext=system_u:object_r:root_t:s0 tclass=dir


type=SYSCALL msg=audit(1404352044.377:1267): arch=x86_64 syscall=utime success=no exit=EACCES a0=4042b7 a1=7fff606c5100 a2=141 a3=7fefb8df77b8 items=0 ppid=20764 pid=20767 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=108 comm=tmpwatch exe=/usr/sbin/tmpwatch subj=system_u:system_r:tmpreaper_t:s0-s0:c0.c1023 key=(null)

Hash: tmpwatch,tmpreaper_t,root_t,dir,setattr

Additional info:
reporter:       libreport-2.1.11
hashmarkername: setroubleshoot
kernel:         3.10.0-123.4.2.el7.x86_64
type:           libreport