Fix log manager script

bubble-server/src/main/resources/packer/roles/bubble/files/log_manager.sh

@@ -31,9 +31,9 @@ REDIS_LOG_FLAG=$(test "${REDIS_LOG_FLAG_VALUE}" == "true" && echo true || echo f
 
 
 function setLoggingForSupervisorConfig {
-  cfgFile=${1}
-  logFlag=${2}
-  tmpFile=$(mktemp /tmp/bubble.log_manager.XXXXXX)
+  cfgFile="${1}"
+  logFlag="${2}"
+  tmpFile="$(mktemp /tmp/bubble.log_manager.XXXXXX)"
 
   while IFS= read -r line; do
     if [[ ${line} == std???_logfile* ]]; then
@@ -54,7 +54,7 @@ function setLoggingForSupervisorConfig {
       echo "${line}" >> "${tmpFile}"
     fi
   done < "${cfgFile}"
-  cat $(tmpFile) > "${cfgFile}"
+  cat "${tmpFile}" > "${cfgFile}"
 
   rm "${tmpFile}"
 }
@@ -70,5 +70,5 @@ fi
 
 if [[ "${REDIS_LOG_FLAG}" != "true" ]]; then
   # truncate tmp bubble log files each time as those might have some output in between:
-  ls "${BUBBLE_LOGS_FOLDER}/*" | xargs truncate -c - s0
+  ls ${BUBBLE_LOGS_FOLDER}/* | xargs truncate -c -s0
 fi