add new pgbackrest template to helm chart to match non-helm structure

Author: jmccormick2001

chart/postgres-operator/files/postgres-operator/cluster/1/cluster-deployment-1.json

@@ -65,18 +65,7 @@
                         "name": "PGDATA_PATH_OVERRIDE",
                         "value": "{{.DataPathOverride}}"
                     }, {
-                        "name": "PGBACKREST_STANZA",
-                        "value": "{{.PgbackrestStanza}}"
-                    }, {
-                        "name": "PGBACKREST_DB_PATH",
-                        "value": "{{.PgbackrestDBPath}}"
-                    }, {
-                        "name": "PGBACKREST_REPO_PATH",
-                        "value": "{{.PgbackrestRepoPath}}"
-                    }, {
-                        "name": "PGBACKREST_LOG_PATH",
-                        "value": "/tmp"
-                    }, {
+			{{.PgbackrestEnvVars}}
                         "name": "PG_DATABASE",
                         "value": "{{.Database}}"
                     }, {
@@ -88,6 +77,9 @@
                     }, {
                         "name": "ARCHIVE_TIMEOUT",
                         "value": "{{.ArchiveTimeout}}"
+                    }, {
+                        "name": "XLOGDIR",
+                        "value": "{{.XLOGDir}}"
                     }, {
                         "name": "PGHOST",
                         "value": "/tmp"

chart/postgres-operator/files/postgres-operator/cluster/1/pgbackrest-env-vars.json

@@ -0,0 +1,12 @@
+                        "name": "PGBACKREST_STANZA",
+                        "value": "{{.PgbackrestStanza}}"
+                    }, {
+                        "name": "PGBACKREST_DB_PATH",
+                        "value": "{{.PgbackrestDBPath}}"
+                    }, {
+                        "name": "PGBACKREST_REPO_PATH",
+                        "value": "{{.PgbackrestRepoPath}}"
+                    }, {
+                        "name": "PGBACKREST_LOG_PATH",
+                        "value": "/tmp"
+                    }, {