Add log files into the cache tar for improved debugging (sonic-net#18026

)

### Why I did it

Cache currently does not save the log of the deb. But it's useful to have the log to understand any cache related problems.

### How I did it

#### How to verify it

```
vkarri@s-build-sonic-01:/sonic-buildimage$ tar -tvf /sonic/sonic_caches/libnl-3-200_3.5.0-1_amd64.deb-adc83b19e793491b1c6ea0f-0ea77d65c49ae3a11dffbca.tgz
-rw-r--r-- vkarri/dip   496230 2024-01-12 19:49 target/debs/bookworm/libnl-3-200_3.5.0-1_amd64.deb.log
```

Makefile.cache

@@ -295,10 +295,12 @@ define SAVE_INTO_CACHE
 		echo "Target $(1) dependencies are modifed - global save cache skipped" >> $($(1)_DST_PATH)/$(1).log
 		$(eval $(1)_CACHE_DIR := $(SONIC_DPKG_LOCAL_CACHE_DIR))
 	 )
-	$($(1)_CACHE_USER) tar -C $($(1)_BASE_PATH) -mczvf $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE) $(2) $(addprefix $($(1)_DST_PATH)/,$($(1)_DERIVED_DEBS) $($(1)_EXTRA_DEBS) )  \
+	cp $($(1)_DST_PATH)/$(1).log $($(1)_DST_PATH)/$(1).cached.log
+	$($(1)_CACHE_USER) tar -C $($(1)_BASE_PATH) -mczvf $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE) $(2) $(addprefix $($(1)_DST_PATH)/,$($(1)_DERIVED_DEBS) $($(1)_EXTRA_DEBS) $(1).cached.log)  \
 		1>>$($(1)_DST_PATH)/$(1).log
 	sudo chmod 777 $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE)
-
+	rm -f $($(1)_DST_PATH)/$(1).cached.log
+
 	echo "File $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE) saved in cache " >> $($(1)_DST_PATH)/$(1).log
 	echo "[ CACHE::SAVED ] $($(1)_CACHE_DIR)/$(MOD_CACHE_FILE)" >> $($(1)_DST_PATH)/$(1).log