fix issue with whitespaces in sonar-scanner path

src/main/assembly/bin/sonar-scanner

@@ -39,7 +39,7 @@ fi
 
 use_embedded_jre=${use_embedded_jre}
 if [ "$use_embedded_jre" = true ]; then
-  export JAVA_HOME=$sonar_scanner_home/jre
+  export JAVA_HOME="$sonar_scanner_home/jre"
 fi
 
 if [ -n "$JAVA_HOME" ]