Initial add of Sensor Base package file

[samaity]

-What I did
added sensor_base.py package to "sonic-platform-common" so that SONiC CLI provides output of "show environment" for NON-BMC CPU and also switch CPU.

-How I verified

OUTPUT from SONiC with BMC cpu

admin@falco-open19-flex:~$ show environment --verbose
Command: sudo sensorutil summary
connection established

** BMC CPU OUTPUT ****
tmp75-i2c-3-48
Adapter: ast_i2c.3
Outlet Middle Temp:  +24.4 C  (high = +80.0 C, hyst = +75.0 C)

tmp75-i2c-3-49
Adapter: ast_i2c.3
Inlet Middle Temp:  +35.5 C  (high = +80.0 C, hyst = +75.0 C)

tmp75-i2c-3-4a
Adapter: ast_i2c.3
Inlet Left Temp:  +31.0 C  (high = +80.0 C, hyst = +75.0 C)

tmp75-i2c-3-4b
Adapter: ast_i2c.3
Switch Temp:  +30.2 C  (high = +80.0 C, hyst = +75.0 C)

tmp75-i2c-3-4c
Adapter: ast_i2c.3
Inlet Right Temp:  +30.6 C  (high = +80.0 C, hyst = +75.0 C)

com_e_driver-i2c-4-33
Adapter: ast_i2c.4
CPU Vcore:      +1.79 V
+3V Voltage:    +3.30 V
+5V Voltage:    +5.07 V
+12V Voltage:  +11.55 V
VDIMM Voltage:  +1.21 V
Memory Temp:    +27.9 C
CPU Temp:       +37.0 C

ltc4151-i2c-7-6f
Adapter: ast_i2c.7
vout1:            N/A
iout1:            N/A

fancpld-i2c-8-33
Adapter: ast_i2c.8
Fan 1 front: 10200 RPM
Fan 1 rear:  8400 RPM
Fan 2 front: 10200 RPM
Fan 2 rear:  8250 RPM
Fan 3 front: 10200 RPM
Fan 3 rear:  8400 RPM
Fan 4 front: 10350 RPM
Fan 4 rear:  8400 RPM
Fan 5 front: 10350 RPM
Fan 5 rear:  8400 RPM

tmp75-i2c-8-48
Adapter: ast_i2c.8
Outlet Right Temp:  +21.1 C  (high = +80.0 C, hyst = +75.0 C)

tmp75-i2c-8-49
Adapter: ast_i2c.8
Outlet Left Temp:  +21.8 C  (high = +80.0 C, hyst = +75.0 C)

** SONiC CPU OUTPUT ****
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +34.0 C  (high = +82.0 C, crit = +104.0 C)
Core 0:         +34.0 C  (high = +82.0 C, crit = +104.0 C)
Core 1:         +34.0 C  (high = +82.0 C, crit = +104.0 C)
Core 2:         +34.0 C  (high = +82.0 C, crit = +104.0 C)
Core 3:         +34.0 C  (high = +82.0 C, crit = +104.0 C)

OUTPUT from SONiC without BMC cpu

admin@lnos-x1-a-csw04:~$ show environment --verbose
Command: sudo sensorutil summary
/usr/share/sonic/device/x86_64-cel_seastone-r0/plugins/sensorutil.py
** SONiC CPU OUTPUT ****
coretemp-isa-0000
Adapter: ISA adapter
Core 0:       +22.0 C  (high = +98.0 C, crit = +98.0 C)
Core 1:       +22.0 C  (high = +98.0 C, crit = +98.0 C)
Core 2:       +22.0 C  (high = +98.0 C, crit = +98.0 C)
Core 3:       +22.0 C  (high = +98.0 C, crit = +98.0 C)

dx010_lm75b-i2c-5-48
Adapter: i2c-0-mux (chan_id 3)
Rear-panel temp sensor 1:  +19.5 C  (high = +43.0 C, hyst = +28.0 C)

dx010_lm75b-i2c-6-49
Adapter: i2c-0-mux (chan_id 4)
Front-panel temp sensor 2:  +25.4 C  (high = +43.0 C, hyst = +28.0 C)

dx010_lm75b-i2c-7-4a
Adapter: i2c-0-mux (chan_id 5)
ASIC temp sensor:  +42.0 C  (high = +43.0 C, hyst = +28.0 C)

dx010_lm75b-i2c-14-48
Adapter: i2c-0-mux (chan_id 4)
Rear-panel temp sensor 1:  +28.4 C  (high = +43.0 C, hyst = +28.0 C)

dx010_lm75b-i2c-15-4e
Adapter: i2c-0-mux (chan_id 5)
Rear-panel temp sensor 2:  +27.6 C  (high = +43.0 C, hyst = +28.0 C)

emc2305-i2c-13-2e
Adapter: i2c-0-mux (chan_id 3)
fan2:        7136 RPM  (div = 4)
fan1:        7021 RPM  (div = 4)
fan5:        6971 RPM  (div = 4)
fan3:        7136 RPM  (div = 4)
fan4:        6984 RPM  (div = 4)

emc2305-i2c-13-4d
Adapter: i2c-0-mux (chan_id 3)
fan5:        6850 RPM  (div = 4)
fan1:        6910 RPM  (div = 4)
fan4:        6898 RPM  (div = 4)
fan2:        7009 RPM  (div = 4)
fan3:        6886 RPM  (div = 4)

dps460-i2c-10-5a
Adapter: i2c-0-mux (chan_id 0)
vin:                          +210.50 V  (crit min = +90.00 V, min = +100.00 V)
                                        (max = +240.00 V, crit max = +264.00 V)
vout1:                        +12.30 V  (crit min = +11.00 V, min = +11.40 V)
                                        (max = +12.60 V, crit max = +13.00 V)
fan1:                         4616 RPM
Power Supply 1 temp sensor 1:  +36.0 C  (low  =  +0.0 C, high = +100.0 C)
                                        (crit low =  +0.0 C, crit =  +0.0 C)
Power Supply 1 temp sensor 2:  +51.5 C  (low  =  +0.0 C, high = +100.0 C)
                                        (crit low =  +0.0 C, crit =  +0.0 C)
Power Supply 1 temp sensor 3:   +0.0 C  (low  =  +0.0 C, high = +100.0 C)
                                        (crit low =  +0.0 C, crit =  +0.0 C)
pin:                           84.88 W  (max = 944.00 W)
pout1:                         74.38 W  (max = 840.00 W, crit =   0.00 W)
                                        (cap =   0.00 W)
iin:                           +0.43 A  (max =  +5.19 A, crit max =  +5.40 A)
iout1:                         +6.05 A  (crit min =  +0.00 A, max = +68.25 A)
                                        (crit max = +71.50 A)

dps460-i2c-11-5b
Adapter: i2c-0-mux (chan_id 1)
vin:                          +211.00 V  (crit min = +90.00 V, min = +100.00 V)
                                        (max = +240.00 V, crit max = +264.00 V)
vout1:                        +12.31 V  (crit min = +11.00 V, min = +11.40 V)
                                        (max = +12.60 V, crit max = +13.00 V)
fan1:                         4616 RPM
Power Supply 2 temp sensor 1:  +37.5 C  (low  =  +0.0 C, high = +100.0 C)
                                        (crit low =  +0.0 C, crit =  +0.0 C)
Power Supply 2 temp sensor 2:  +53.0 C  (low  =  +0.0 C, high = +100.0 C)
                                        (crit low =  +0.0 C, crit =  +0.0 C)
Power Supply 2 temp sensor 3:   +0.0 C  (low  =  +0.0 C, high = +100.0 C)
                                        (crit low =  +0.0 C, crit =  +0.0 C)
pin:                           80.00 W  (max = 944.00 W)
pout1:                         72.00 W  (max = 840.00 W, crit =   0.00 W)
                                        (cap =   0.00 W)
iin:                           +0.41 A  (max =  +5.19 A, crit max =  +5.40 A)
iout1:                         +5.85 A  (crit min =  +0.00 A, max = +68.25 A)
                                        (crit max = +71.50 A)

[keboliu]

want to understand how will this sensor work with other devices? For example, for PSU we have "get_output_voltage", "get_output_current", "get_output_power"..., for thermal sensors we now have a thermal_base.py?