Also check for existing keystore file in bootstrap pod

Signed-off-by: Mark Baumgarten <[email protected]>

opensearch-operator/pkg/builders/cluster.go

@@ -937,7 +937,9 @@ func NewBootstrapPod(
 				#!/usr/bin/env bash
 				set -euo pipefail
 
-				/usr/share/opensearch/bin/opensearch-keystore create
+				if [ ! -f /usr/share/opensearch/config/opensearch.keystore ]; then
+				  /usr/share/opensearch/bin/opensearch-keystore create
+				fi
 				for i in /tmp/keystoreSecrets/*/*; do
 				  key=$(basename $i)
 				  echo "Adding file $i to keystore key $key"
@@ -1256,4 +1258,4 @@ func NewServiceMonitor(cr *opsterv1.OpenSearchCluster) *monitoring.ServiceMonito
 			NamespaceSelector: namespaceSelector,
 		},
 	}
-}
+}