AMBARI-16140: ambari-agent RPM yum update should backup both stack and common-services (dili)

ambari-agent/src/main/package/deb/control/preinst

@@ -42,7 +42,7 @@ then
     mv -f "$STACKS_FOLDER" "$STACKS_FOLDER_OLD"
 fi
 
-if [ -d "$COMMON_SERVICES_FOLDER_OLD" ]
+if [ -d "$COMMON_SERVICES_FOLDER" ]
 then
     mv -f "$COMMON_SERVICES_FOLDER" "$COMMON_SERVICES_FOLDER_OLD"
 fi

ambari-agent/src/main/package/rpm/preinstall.sh

@@ -38,7 +38,7 @@ then
     mv -f "$STACKS_FOLDER" "$STACKS_FOLDER_OLD"
 fi
 
-if [ -d "$COMMON_SERVICES_FOLDER_OLD" ]
+if [ -d "$COMMON_SERVICES_FOLDER" ]
 then
     mv -f "$COMMON_SERVICES_FOLDER" "$COMMON_SERVICES_FOLDER_OLD"
 fi