Regression for log.tag properties

Allow log.tag and persist.log.tag as log_tag_prop

Bug: 28942894
Change-Id: I05766b99b9535a79a39adc55cad004decd52956e

property_contexts

@@ -33,7 +33,7 @@ debug.                  u:object_r:debug_prop:s0
 debug.db.               u:object_r:debuggerd_prop:s0
 dumpstate.              u:object_r:dumpstate_prop:s0
 log.                    u:object_r:log_prop:s0
-log.tag.                u:object_r:log_tag_prop:s0
+log.tag                 u:object_r:log_tag_prop:s0
 log.tag.WifiHAL         u:object_r:wifi_log_prop:s0
 security.perf_harden    u:object_r:shell_prop:s0
 service.adb.root        u:object_r:shell_prop:s0
@@ -43,7 +43,7 @@ persist.audio.          u:object_r:audio_prop:s0
 persist.debug.          u:object_r:persist_debug_prop:s0
 persist.logd.           u:object_r:logd_prop:s0
 persist.logd.security   u:object_r:device_logging_prop:s0
-persist.log.tag.        u:object_r:log_tag_prop:s0
+persist.log.tag         u:object_r:log_tag_prop:s0
 persist.mmc.            u:object_r:mmc_prop:s0
 persist.sys.            u:object_r:system_prop:s0
 persist.sys.safemode    u:object_r:safemode_prop:s0