AMBARI-18275. Ambari server upgrade script deletes all .pyc files (Dmitry Lysnichenko via smohanty)

ambari-server/conf/unix/install-helper.sh

@@ -48,7 +48,7 @@ clean_pyc_files(){
   # cleaning old *.pyc files
   find $RESOURCE_MANAGEMENT_DIR/ -name *.pyc -exec rm {} \;
   find $COMMON_DIR/ -name *.pyc -exec rm {} \;
-  find $AMBARI_SEVER/ -name *.pyc -exec rm {} \;
+  find $AMBARI_SERVER/ -name *.pyc -exec rm {} \;
 }