[advanced-reboot] Handle logs on tmpfs for all new platforms (#9094)

Fix the tests failing on newly addded platforms where logs are moved to tmpfs.

Related PR: sonic-net/sonic-buildimage#15077

Fixes: sonic-net/sonic-buildimage#15895
This change updates the check from hwsku match to platform match

tests/platform_tests/conftest.py

@@ -21,10 +21,15 @@
 FMT = "%b %d %H:%M:%S.%f"
 FMT_SHORT = "%b %d %H:%M:%S"
 FMT_ALT = "%Y-%m-%dT%H:%M:%S.%f%z"
-SMALL_DISK_SKUS = [
-    "Arista-7060CX-32S-C32",
-    "Arista-7060CX-32S-Q32",
-    "Arista-7060CX-32S-D48C8"
+LOGS_ON_TMPFS_PLATFORMS = [
+    "x86_64-arista_7050_qx32",
+    "x86_64-arista_7050_qx32s",
+    "x86_64-arista_7060_cx32s",
+    "x86_64-arista_7260cx3_64",
+    "x86_64-arista_7050cx3_32s",
+    "x86_64-mlnx_msn2700-r0",
+    "x86_64-dell_s6100_c2538-r0",
+    "armhf-nokia_ixs7215_52x-r0"
 ]
 
 
@@ -452,7 +457,7 @@ def advanceboot_loganalyzer(duthosts, enum_rand_one_per_hwsku_frontend_hostname,
             name='device_type') for arg in mark.args]
         if 'vs' not in device_marks:
             pytest.skip('Testcase not supported for kvm')
-    hwsku = duthost.facts["hwsku"]
+    platform = duthost.facts["platform"]
     logs_in_tmpfs = list()
 
     loganalyzer = LogAnalyzer(
@@ -486,7 +491,7 @@ def pre_reboot_analysis():
             True if (log_filesystem and "tmpfs" in log_filesystem) else False)
         base_os_version.append(get_current_sonic_version(duthost))
         bgpd_log = bgpd_log_handler(preboot=True)
-        if hwsku in SMALL_DISK_SKUS or (len(logs_in_tmpfs) > 0 and logs_in_tmpfs[0] is True):
+        if platform in LOGS_ON_TMPFS_PLATFORMS or (len(logs_in_tmpfs) > 0 and logs_in_tmpfs[0] is True):
             # For small disk devices, /var/log in mounted in tmpfs.
             # Hence, after reboot the preboot logs are lost.
             # For log_analyzer to work, it needs logs from the shutdown path
@@ -508,7 +513,7 @@ def pre_reboot_analysis():
 
     def post_reboot_analysis(marker, event_counters=None, reboot_oper=None, log_dir=None):
         bgpd_log_handler()
-        if hwsku in SMALL_DISK_SKUS or (len(logs_in_tmpfs) > 0 and logs_in_tmpfs[0] is True):
+        if platform in LOGS_ON_TMPFS_PLATFORMS or (len(logs_in_tmpfs) > 0 and logs_in_tmpfs[0] is True):
             restore_backup = "mv /host/syslog.99 /var/log/; " +\
                 "mv /host/sairedis.rec.99 /var/log/swss/; " +\
                 "mv /host/swss.rec.99 /var/log/swss/; " +\