[Build]: Fix docker images built multiple times issue (sonic-net#9253)

The same docker image is built multiple times after upgrading to bullseye, the build time is increased to about 15 hours from 6 hours.
See log: https://dev.azure.com/mssonic/be1b070f-be15-4154-aade-b1d3bfb17054/_apis/build/builds/50390/logs/9
Line 1437: 2021-11-11T11:15:02.7094923Z [ building ] [ target/docker-sonic-telemetry.gz ]
Line 1446: 2021-11-11T11:37:41.1073304Z [ finished ] [ target/docker-sonic-telemetry.gz ]
Line 1459: 2021-11-11T11:38:20.6293007Z [ building ] [ target/docker-sonic-telemetry.gz-load ]
Line 1462: 2021-11-11T11:38:28.1250201Z [ finished ] [ target/docker-sonic-telemetry.gz-load ]
Line 2906: 2021-11-11T18:57:42.8207365Z [ building ] [ target/docker-sonic-telemetry.gz ]
Line 2917: 2021-11-11T19:43:47.1860961Z [ finished ] [ target/docker-sonic-telemetry.gz ]
Line 3997: 2021-11-11T22:49:35.0196252Z [ building ] [ target/docker-sonic-telemetry.gz ]
Line 4002: 2021-11-11T23:14:00.4127728Z [ finished ] [ target/docker-sonic-telemetry.gz ]

How I did it
Place the python wheels in another folder relative to the build distribution.

Co-authored-by: Ubuntu <xumia@xumia-vm1.jqzc3g5pdlluxln0vevsg3s20h.xx.internal.cloudapp.net>

Makefile.cache

@@ -68,6 +68,7 @@
 # Run the 'touch cache.skip.common' command in the base directory to exclude the common files from caching
 SONIC_COMMON_FILES_LIST :=  $(if $(wildcard cache.skip.common),, .platform slave.mk rules/functions Makefile.cache)
 SONIC_COMMON_FLAGS_LIST :=  $(CONFIGURED_PLATFORM) \
+                            $(BLDENV) \
                             $(SONIC_DEBUGGING_ON) \
                             $(SONIC_PROFILING_ON) $(SONIC_ENABLE_SYNCD_RPC)
 SONIC_COMMON_DPKG_LIST  :=  debian/control debian/changelog debian/rules \

platform/mellanox/mlnx-platform-api.mk

@@ -16,11 +16,13 @@
 #
 # SONIC_PLATFORM_API_PY2 package
 
-SONIC_PLATFORM_API_PY2 = mlnx_platform_api-1.0-py2-none-any.whl
-$(SONIC_PLATFORM_API_PY2)_SRC_PATH = $(PLATFORM_PATH)/mlnx-platform-api
-$(SONIC_PLATFORM_API_PY2)_PYTHON_VERSION = 2
-$(SONIC_PLATFORM_API_PY2)_DEPENDS = $(SONIC_PY_COMMON_PY2) $(SONIC_PLATFORM_COMMON_PY2) $(SONIC_CONFIG_ENGINE_PY2)
-SONIC_PYTHON_WHEELS += $(SONIC_PLATFORM_API_PY2)
+ifeq ($(ENABLE_PY2_MODULES), y)
+    SONIC_PLATFORM_API_PY2 = mlnx_platform_api-1.0-py2-none-any.whl
+    $(SONIC_PLATFORM_API_PY2)_SRC_PATH = $(PLATFORM_PATH)/mlnx-platform-api
+    $(SONIC_PLATFORM_API_PY2)_PYTHON_VERSION = 2
+    $(SONIC_PLATFORM_API_PY2)_DEPENDS = $(SONIC_PY_COMMON_PY2) $(SONIC_PLATFORM_COMMON_PY2) $(SONIC_CONFIG_ENGINE_PY2)
+    SONIC_PYTHON_WHEELS += $(SONIC_PLATFORM_API_PY2)
+endif
 
 export mlnx_platform_api_py2_wheel_path="$(addprefix $(PYTHON_WHEELS_PATH)/,$(SONIC_PLATFORM_API_PY2))"
 

slave.mk

@@ -30,8 +30,8 @@ DOCKERS_PATH = dockers
 BLDENV = $(shell lsb_release -cs)
 DEBS_PATH = $(TARGET_PATH)/debs/$(BLDENV)
 FILES_PATH = $(TARGET_PATH)/files/$(BLDENV)
-PYTHON_DEBS_PATH = $(TARGET_PATH)/python-debs
-PYTHON_WHEELS_PATH = $(TARGET_PATH)/python-wheels
+PYTHON_DEBS_PATH = $(TARGET_PATH)/python-debs/$(BLDENV)
+PYTHON_WHEELS_PATH = $(TARGET_PATH)/python-wheels/$(BLDENV)
 PROJECT_ROOT = $(shell pwd)
 JESSIE_DEBS_PATH = $(TARGET_PATH)/debs/jessie
 JESSIE_FILES_PATH = $(TARGET_PATH)/files/jessie
@@ -978,6 +978,7 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_INSTALLERS)) : $(TARGET_PATH)/% : \
         $(addprefix $(PYTHON_WHEELS_PATH)/,$(SONIC_PLATFORM_COMMON_PY3)) \
         $(addprefix $(PYTHON_WHEELS_PATH)/,$(REDIS_DUMP_LOAD_PY2)) \
         $(addprefix $(PYTHON_WHEELS_PATH)/,$(SONIC_PLATFORM_API_PY2)) \
+        $(addprefix $(PYTHON_WHEELS_PATH)/,$(SONIC_PLATFORM_API_PY3)) \
         $(if $(findstring y,$(PDDF_SUPPORT)),$(addprefix $(PYTHON_WHEELS_PATH)/,$(PDDF_PLATFORM_API_BASE_PY2))) \
         $(if $(findstring y,$(PDDF_SUPPORT)),$(addprefix $(PYTHON_WHEELS_PATH)/,$(PDDF_PLATFORM_API_BASE_PY3))) \
         $(addprefix $(PYTHON_WHEELS_PATH)/,$(SONIC_YANG_MODELS_PY3)) \