SecretsManager: Add base encryption manager (#107562)

Co-authored-by: Michael Mandrus <michael.mandrus@grafana.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

pkg/setting/setting_secrets_manager.go

@@ -4,7 +4,6 @@ import (
 	"regexp"
 	"time"
 
-	"github.com/grafana/grafana/pkg/registry/apis/secret/encryption/cipher"
 	"github.com/grafana/grafana/pkg/services/kmsproviders"
 )
 
@@ -18,8 +17,6 @@ type SecretsManagerSettings struct {
 	SecretKey          string
 	EncryptionProvider string
 	AvailableProviders []string
-
-	Encryption EncryptionSettings
 }
 
 func (cfg *Cfg) readSecretsManagerSettings() {
@@ -29,9 +26,4 @@ func (cfg *Cfg) readSecretsManagerSettings() {
 	// TODO: These are not used yet by the secrets manager because we need to distentagle the dependencies with OSS.
 	cfg.SecretsManagement.SecretKey = secretsMgmt.Key("secret_key").MustString("")
 	cfg.SecretsManagement.AvailableProviders = regexp.MustCompile(`\s*,\s*`).Split(secretsMgmt.Key("available_encryption_providers").MustString(""), -1) // parse comma separated list
-
-	encryption := cfg.Raw.Section("secrets_manager.encryption")
-	cfg.SecretsManagement.Encryption.DataKeysCacheTTL = encryption.Key("data_keys_cache_ttl").MustDuration(15 * time.Minute)
-	cfg.SecretsManagement.Encryption.DataKeysCleanupInterval = encryption.Key("data_keys_cache_cleanup_interval").MustDuration(1 * time.Minute)
-	cfg.SecretsManagement.Encryption.Algorithm = encryption.Key("algorithm").MustString(cipher.AesGcm)
 }