[Python] Migrate applications/scripts to import sonic-py-common package (sonic-net#5043)

As part of consolidating all common Python-based functionality into the new sonic-py-common package, this pull request:
1. Redirects all Python applications/scripts in sonic-buildimage repo which previously imported sonic_device_util or sonic_daemon_base to instead import sonic-py-common, which was added in sonic-net#5003
2. Replaces all calls to `sonic_device_util.get_platform_info()` to instead call `sonic_py_common.get_platform()` and removes any calls to `sonic_device_util.get_machine_info()` which are no longer necessary (i.e., those which were only used to pass the results to `sonic_device_util.get_platform_info()`.
3. Removes unused imports to the now-deprecated sonic-daemon-base package and sonic_device_util.py module

This is the next step toward resolving sonic-net#4999

Also reverted my previous change in which device_info.get_platform() would first try obtaining the platform ID string from Config DB and fall back to gathering it from machine.conf upon failure because this function is called by sonic-cfggen before the data is in the DB, in which case, the db_connect() call will hang indefinitely, which was not the behavior I expected. As of now, the function will always reference machine.conf.

Author: jleveque

device/accton/x86_64-accton_as7116_54x-r0/sonic_platform/chassis.py

@@ -14,7 +14,7 @@
     import json
     import syslog
     from sonic_platform_base.chassis_base import ChassisBase
-    from sonic_daemon_base.daemon_base import Logger
+    from sonic_py_common.logger import Logger
     from sonic_platform.fan import Fan
     from sonic_platform.psu import Psu
     from sonic_platform.component import Component

device/accton/x86_64-accton_as7116_54x-r0/sonic_platform/sfp.py

@@ -8,7 +8,6 @@
     import os
     import time
     import subprocess
-    import sonic_device_util
     import syslog
     from ctypes import create_string_buffer
     from sonic_platform_base.sfp_base import SfpBase
@@ -18,7 +17,6 @@
     from sonic_platform_base.sonic_sfp.sff8436 import sff8436Dom
     from sonic_platform_base.sonic_sfp.sff8436 import sff8436InterfaceId
     from sonic_platform_base.sonic_sfp.sfputilhelper import SfpUtilHelper
-    from sonic_daemon_base.daemon_base import Logger
 except ImportError as e:
     raise ImportError(str(e) + "- required module not found")
 

device/celestica/x86_64-cel_e1031-r0/sonic_platform/sfp.py

@@ -11,7 +11,6 @@
 import os
 import time
 import subprocess
-import sonic_device_util
 from ctypes import create_string_buffer
 
 try:

device/celestica/x86_64-cel_seastone-r0/sonic_platform/helper.py

@@ -3,17 +3,18 @@
 import os
 import struct
 import subprocess
-from sonic_daemon_base.daemon_base import DaemonBase
 from mmap import *
 
+from sonic_py_common import device_info
+
 HOST_CHK_CMD = "docker > /dev/null 2>&1"
 EMPTY_STRING = ""
 
 
 class APIHelper():
 
     def __init__(self):
-        (self.platform, self.hwsku) = DaemonBase().get_platform_and_hwsku()
+        (self.platform, self.hwsku) = device_info.get_platform_and_hwsku()
 
     def is_host(self):
         return os.system(HOST_CHK_CMD) == 0

device/celestica/x86_64-cel_seastone-r0/sonic_platform/sfp.py

@@ -10,7 +10,6 @@
 
 import time
 import subprocess
-import sonic_device_util
 from ctypes import create_string_buffer
 
 try:

device/celestica/x86_64-cel_silverstone-r0/sonic_platform/sfp.py

@@ -11,7 +11,6 @@
 import os
 import time
 import subprocess
-import sonic_device_util
 from ctypes import create_string_buffer
 
 try:

device/juniper/x86_64-juniper_qfx5200-r0/plugins/qfx5200_sfp_init.py

@@ -35,7 +35,7 @@
 import time
 import os.path
 import sfputil as jnpr_sfp
-from sonic_daemon_base.daemon_base import Logger
+from sonic_py_common.logger import Logger
 from pprint import pprint
 
 SYSLOG_IDENTIFIER = "sfputil"

device/juniper/x86_64-juniper_qfx5200-r0/plugins/sfputil.py

@@ -42,7 +42,7 @@
     from sonic_platform_base.sonic_sfp.sff8472 import sff8472InterfaceId
     from sonic_platform_base.sonic_sfp.sff8436 import sff8436Dom
     from sonic_platform_base.sonic_sfp.sff8436 import sff8436InterfaceId
-    from sonic_daemon_base.daemon_base import Logger
+    from sonic_py_common.logger import Logger
     from ctypes import create_string_buffer
 
 except ImportError as e:

device/juniper/x86_64-juniper_qfx5210-r0/plugins/sfputil.py

@@ -8,7 +8,7 @@
     import io
     import string
     from ctypes import create_string_buffer
-    from sonic_daemon_base.daemon_base import Logger
+    from sonic_py_common.logger import Logger
 except ImportError, e:
     raise ImportError (str(e) + "- required module not found")
 

device/mellanox/x86_64-mlnx_msn2700-r0/plugins/eeprom.py

@@ -21,7 +21,7 @@
     from cStringIO import StringIO
     from sonic_eeprom import eeprom_base
     from sonic_eeprom import eeprom_tlvinfo
-    from sonic_device_util import get_machine_info
+    from sonic_py_common.device_info import get_machine_info
     import subprocess
 except ImportError, e:
     raise ImportError (str(e) + "- required module not found")