Description of problem:
sssctl shows time stamps in UTC. Either "UTC" should be added to the time
stamps or the time should be converted to the local time zone.



Version-Release number of selected component (if applicable):
sssd-tools-1.14.0-3.fc25.x86_64



Steps to Reproduce:
1. Show the current time:
    # date
    Do 14. Jul 13:55:20 CEST 2016
2. Verify that a user is not in the cache
    # sssctl user admin
3. Get the user cached
    # getent passwd admin
    admin:*:373000000:373000000:Administrator:/home/admin:/bin/bash
4. Show the cache information:
    # sssctl user admin
    Name: admin
    Cache entry creation date: 07/14/16 11:55:17
    Cache entry last update time: 07/14/16 11:55:17
    Cache entry expiration time: 07/14/16 13:25:17
    Initgroups expiration time: Initgroups were not yet performed
    Cached in InfoPipe: No



Actual results:
Time stamps are shown in UTC without telling the user.



Expected results:
Time stamps should be either converted to the local time zone or "UTC" added.