[#4020] Add Redis and PostgreSQL optional charts (#4021)

infrastructure/helm-chart/charts/tools/charts/postgresql/BUILD

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+load("//tools/build:helm.bzl", "helm_ruleset_version")
+
+helm_ruleset_version(
+    version = "15.1",
+)

infrastructure/helm-chart/charts/tools/charts/postgresql/Chart.yaml

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+apiVersion: v2
+appVersion: "1.0"
+description: PostgreSQL Server
+name: postgresql
+version: 15.1

infrastructure/helm-chart/charts/tools/charts/postgresql/templates/secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+type: Opaque
+data:
+  postgres-password: {{ default (randAlphaNum 32) | b64enc | quote }}

infrastructure/helm-chart/charts/tools/charts/postgresql/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+spec:
+  type: ClusterIP
+  clusterIP: None
+  ports:
+    - name: postgres
+      port: {{ .Values.port }}
+      targetPort: {{ .Values.port }}
+  selector:
+    app: postgres

infrastructure/helm-chart/charts/tools/charts/postgresql/templates/statefulset.yaml

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+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: postgres
+  serviceName: postgres
+  template:
+    metadata:
+      labels:
+        app: postgres
+    spec:      
+      terminationGracePeriodSeconds: 10
+      containers:
+        - name: postgres
+          image: "postgres:{{ .Values.version }}"
+          imagePullPolicy: "IfNotPresent"
+          env:
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres
+                  key: postgres-password
+          ports:
+            - name: postgres
+              containerPort: {{ .Values.port }}
+          livenessProbe:
+            tcpSocket:
+              port: {{ .Values.port }}
+            initialDelaySeconds: 20
+            periodSeconds: 10
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 5
+          resources: {{ .Values.resources }}
+  volumeClaimTemplates:
+    - metadata:
+        name: postgres-data
+      spec:
+        accessModes:
+          - "ReadWriteOnce"
+        resources:
+          requests:
+            storage: {{ .Values.storage }}

infrastructure/helm-chart/charts/tools/charts/postgresql/values.yaml

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+version: 15.1
+port: 5432
+storage: "5Gi"
+resources:

infrastructure/helm-chart/charts/tools/charts/redis/BUILD

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+load("//tools/build:helm.bzl", "helm_ruleset_version")
+
+helm_ruleset_version(
+    version = "7.0.8",
+)

infrastructure/helm-chart/charts/tools/charts/redis/Chart.yaml

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+apiVersion: v2
+appVersion: "1.0"
+description: Redis Server
+name: redis
+version: 7.0.8

infrastructure/helm-chart/charts/tools/charts/redis/templates/secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: redis
+  labels:
+    app: redis
+type: Opaque
+data:
+  redis-password: {{ default (randAlphaNum 32) | b64enc | quote }}

infrastructure/helm-chart/charts/tools/charts/redis/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: redis
+  labels:
+    app: redis
+spec:
+  type: ClusterIP
+  clusterIP: None
+  ports:
+    - name: redis
+      port: {{ .Values.port }}
+      targetPort: {{ .Values.port }}
+  selector:
+    app: redis

infrastructure/helm-chart/charts/tools/charts/redis/templates/statefulset.yaml

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+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: redis
+  labels:
+    app: redis
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: redis
+  serviceName: redis
+  template:
+    metadata:
+      labels:
+        app: redis
+    spec:      
+      terminationGracePeriodSeconds: 10
+      containers:
+        - name: redis
+          image: "redis:{{ .Values.version }}"
+          imagePullPolicy: "IfNotPresent"
+          command:
+            - "redis-server"
+          env:
+            - name: REDIS_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: redis
+                  key: redis-password
+          ports:
+            - name: redis
+              containerPort: {{ .Values.port }}
+          livenessProbe:
+            tcpSocket:
+              port: {{ .Values.port }}
+            initialDelaySeconds: 20
+            periodSeconds: 10
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 5
+          resources: {{ .Values.resources }}
+  volumeClaimTemplates:
+    - metadata:
+        name: redis-data
+      spec:
+        accessModes:
+          - "ReadWriteOnce"
+        resources:
+          requests:
+            storage: {{ .Values.storage }}

infrastructure/helm-chart/charts/tools/charts/redis/values.yaml

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+version: 7.0.8
+port: 6379
+storage: "5Gi"
+resources: