Merge "Omaha #3049 - entire data directory cannot be removed because it is mounted" into omaha_14.4.1

Former-commit-id: e41f9d171f [formerly f43550735d] [formerly 354163cfae [formerly b48063be7f7e50a9196da1e649443249e07daafd]]
Former-commit-id: 354163cfae
Former-commit-id: 390fb20752

deltaScripts/14.4.1/DR3049/postgresql9.3-upgrade/initialize_database.sh

@@ -162,16 +162,10 @@ do
 done
 
 # purge the existing data directory
-if [ -d ${AWIPS2_DATA_DIRECTORY} ]; then
-	rm -rf ${AWIPS2_DATA_DIRECTORY}
-	if [ $? -ne 0 ]; then
-		exit 1
-	fi 
-fi
-mkdir ${AWIPS2_DATA_DIRECTORY}
+rm -rf ${AWIPS2_DATA_DIRECTORY}/*
 if [ $? -ne 0 ]; then
-   exit 1
-fi
+	exit 1
+fi 
 
 init_db