boot-time-monitor: store boot time data in /var/google
All data in /var/google persists after update. Since boot time monitor
service needs data that stored before powercycle, moving the data
directory to /var/google.
Tested:
```
root@ddcgx3-nfd01:~# ls /usr/share/boot_time_monitor/
ls: /usr/share/boot_time_monitor/: No such file or directory
root@ddcgx3-nfd01:~# ls /var/google/boot_time_monitor/
bmc_checkpoints.csv bmc_checkpoints.csv.completed bmc_durations.csv bmc_durations.csv.completed host0_checkpoints.csv host0_durations.csv
```
Google-Bug-Id: 326579702
Change-Id: Ia9cd39ac18311dd3e8aa5813f02dd2040dfb1ece
Signed-off-by: Munawar Hussain <munawarhussain@google.com>
(cherry pick from commit e5fdcc6cac5ee62a83fc1f949f80fc896ef588ac)
1 file changed
