Merge branch 'Refactor_Knowhere' into 'branch-0.5.0'

MS-579 Server log format: need add month/day in void of the same log name

See merge request megasearch/milvus!615

Former-commit-id: cceac0c6463636868d845f11a25f5f885cb72728

cpp/conf/log_config.template

 * GLOBAL:
     FORMAT                  =   "%datetime | %level | %logger | %msg"
-    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%H:%m}-global.log"
+    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%y-%M-%d-%H:%m}-global.log"
     ENABLED                 =   true
     TO_FILE                 =   true
     TO_STANDARD_OUTPUT      =   false
@@ -8,12 +8,12 @@
     PERFORMANCE_TRACKING    =   false
     MAX_LOG_FILE_SIZE       =   209715200 ## Throw log files away after 200MB
 * DEBUG:
-    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%H:%m}-debug.log"
+    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%y-%M-%d-%H:%m}-debug.log"
     ENABLED                 =   true
 * WARNING:
-    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%H:%m}-warning.log"
+    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%y-%M-%d-%H:%m}-warning.log"
 * TRACE:
-    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%H:%m}-trace.log"
+    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%y-%M-%d-%H:%m}-trace.log"
 * VERBOSE:
     FORMAT                  =   "%datetime{%d/%M/%y} | %level-%vlevel | %msg"
     TO_FILE                 =   false
@@ -21,7 +21,7 @@
 ## Error logs
 * ERROR:
     ENABLED                 =   true
-    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%H:%m}-error.log"
+    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%y-%M-%d-%H:%m}-error.log"
 * FATAL:
     ENABLED                 =   true
-    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%H:%m}-fatal.log"
+    FILENAME                =   "@MILVUS_DB_PATH@/logs/milvus-%datetime{%y-%M-%d-%H:%m}-fatal.log"
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