feat(replicationGroup): Add readerEndpoint to status

[amotolani]

Description of your changes

• Adds the readerEndpoint for the NodeGroups
• Populates the data for the primaryEndpoint for the NodeGroups

Managed Resource

apiVersion: cache.aws.crossplane.io/v1beta1
kind: ReplicationGroup
metadata:
  annotations:
    crossplane.io/composition-resource-name: ReplicationGroup
    crossplane.io/external-create-pending: "2024-07-11T20:00:51-06:00"
    crossplane.io/external-create-succeeded: "2024-07-11T20:00:53-06:00"
    crossplane.io/external-name: redis-test-redis-default
  creationTimestamp: "2024-07-12T01:44:22Z"
  finalizers:
  - finalizer.managedresource.crossplane.io
  generateName: redis-test-qjnwv-
  generation: 3
  labels:
    crossplane.io/claim-name: redis-test
    crossplane.io/claim-namespace: default
    crossplane.io/composite: redis-test-qjnwv
  name: redis-test-qjnwv-thbts
  ownerReferences:
  - apiVersion: bitso.com/v1alpha1
    blockOwnerDeletion: true
    controller: true
    kind: XRedisCluster
    name: redis-test-qjnwv
    uid: 90cd89da-8ccf-4836-a083-4dc255e3efdb
  resourceVersion: "12735"
  uid: 954c50f2-65c8-41bc-95e1-eac26caee680
spec:
  deletionPolicy: Delete
  forProvider:
    applyModificationsImmediately: true
    atRestEncryptionEnabled: true
    authEnabled: true
    automaticFailoverEnabled: true
    cacheNodeType: cache.t4g.small
    cacheParameterGroupName: default.redis7
    cacheSubnetGroupName: redis-test-qjnwv-z8tjv
    cacheSubnetGroupNameRef:
      name: redis-test-qjnwv-z8tjv
    cacheSubnetGroupNameSelector:
      matchControllerRef: true
    engine: redis
    engineVersion: "7.0"
    numCacheClusters: 2
    port: 6379
    preferredMaintenanceWindow: fri:08:30-fri:09:30
    region: us-east-1
    replicationGroupDescription: redis-test RedisCluster
    securityGroupIdRefs:
    - name: redis-test-qjnwv-xxtz2
    securityGroupIdSelector:
      matchControllerRef: true
    securityGroupIds:
    - sg-0db0011339c92bbd7
    snapshotRetentionLimit: 0
    snapshotWindow: 03:30-04:30
    tags:
    - key: environment
      value: e2e-tests
    - key: application
      value: bitso
    - key: created-with
      value: crossplane
    transitEncryptionEnabled: true
  managementPolicies:
  - '*'
  providerConfigRef:
    name: default
status:
  atProvider:
    automaticFailoverStatus: enabled
    configurationEndpoint:
      address: master.redis-test-redis-default.bqrg2f.use1.cache.amazonaws.com
      port: 6379
    memberClusters:
    - redis-test-redis-default-001
    - redis-test-redis-default-002
    nodeGroups:
    - nodeGroupID: "0001"
      nodeGroupMembers:
      - cacheClusterId: redis-test-redis-default-001
        cacheNodeId: "0001"
        currentRole: primary
        preferredAvailabilityZone: us-east-1c
        readEndpoint:
          address: redis-test-redis-default-001.redis-test-redis-default.bqrg2f.use1.cache.amazonaws.com
          port: 6379
      - cacheClusterId: redis-test-redis-default-002
        cacheNodeId: "0001"
        currentRole: replica
        preferredAvailabilityZone: us-east-1b
        readEndpoint:
          address: redis-test-redis-default-002.redis-test-redis-default.bqrg2f.use1.cache.amazonaws.com
          port: 6379
      primaryEndpoint:
        address: master.redis-test-redis-default.bqrg2f.use1.cache.amazonaws.com
        port: 6379
      readerEndpoint:
        address: replica.redis-test-redis-default.bqrg2f.use1.cache.amazonaws.com
        port: 6379
      status: available
    pendingModifiedValues:
      resharding:
        slotMigration:
          progressPercentage: 0
    status: available
  conditions:
  - lastTransitionTime: "2024-07-12T02:00:53Z"
    reason: ReconcileSuccess
    status: "True"
    type: Synced
  - lastTransitionTime: "2024-07-12T02:12:01Z"
    reason: Available
    status: "True"
    type: Ready

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

[MisterMX]

LGTM. Thank you very much @amotolani!