Use tmpfs for /var/log on Arista 7050CX3-32S (sonic-net#13805)

This is to reduce writes to the SSD on the device.

Signed-off-by: Saikrishna Arcot <sarcot@microsoft.com>

Author: saiarcot895

files/Aboot/boot0.j2

@@ -526,6 +526,7 @@ write_platform_specific_cmdline() {
     fi
     if [ "$sid" = "Lodoga" ]; then
         aboot_machine=arista_7050cx3_32s
+        cmdline_add logs_inram=on
     fi
     if [ "$sid" = "Marysville" ]; then
         aboot_machine=arista_7050sx3_48yc8