Resolved Elastic Search Installation Issue

Fixed the docker installation script.

Issue-Id : POLICY-147

Change-Id: I39a183439054e96da7d4227d285f067f5577889e
Signed-off-by: rb7147 <rb7147@att.com>
diff --git a/policy-pe/docker-install.sh b/policy-pe/docker-install.sh
index edce422..e8b9aaf 100644
--- a/policy-pe/docker-install.sh
+++ b/policy-pe/docker-install.sh
@@ -458,7 +458,7 @@
 		source "${HOME}/.profile"
 	fi
 	
-	ELK_TARGET_INSTALL_DIR=${POLICY_HOME}/elk
+	ELK_TARGET_INSTALL_DIR="${POLICY_HOME}"/elk
 	
 	if [[ -d ${ELK_TARGET_INSTALL_DIR} ]]; then
 		echo "WARNING: ${ELK_TARGET_INSTALL_DIR} exists."