Resolve "Unify secret configuration under secrets.data"

General MR

Summary

This MR unifies secret configuration

Relevant logs/screenshots

chuka@DESKTOP-006TSPC:~/bigbang/bigbang$ kubectl get pods -n external-secrets
NAME                                READY   STATUS    RESTARTS   AGE
external-secrets-6bfff967f7-58xlb   2/2     Running   0          114s
chuka@DESKTOP-006TSPC:~/bigbang/bigbang$ kubectl get css -n external-secrets
NAME        AGE    STATUS   CAPABILITIES   READY
team-list   2m2s   Valid    ReadWrite      True
chuka@DESKTOP-006TSPC:~/bigbang/bigbang$ kubectl get es -n external-secrets
NAME                        STORETYPE            STORE       REFRESH INTERVAL   STATUS         READY
team-list-externalsecrets   ClusterSecretStore   team-list   1m                 SecretSynced   True

Linked Issue

issue

Upgrade Notices

• Removed secrets.secretKeyName support
• Use secrets.data for both single key and multiple key mappings
• Use secrets.dataFrom to extract an entire remote secret.

Related to #109 (closed)