FIXES PLT-6648 Add support for Server Side Encryption on S3 (#6467)

Help from Jason Blais on wording
Update storage_settings.jsx
Update en.json

model/config.go

@@ -262,6 +262,7 @@ type FileSettings struct {
 	AmazonS3Endpoint        string
 	AmazonS3SSL             *bool
 	AmazonS3SignV2          *bool
+	AmazonS3SSE             *bool
 }
 
 type EmailSettings struct {
@@ -551,6 +552,11 @@ func (o *Config) SetDefaults() {
 		// Signature v2 is not enabled by default.
 	}
 
+	if o.FileSettings.AmazonS3SSE == nil {
+		o.FileSettings.AmazonS3SSE = new(bool)
+		*o.FileSettings.AmazonS3SSE = false // Not Encrypted by default.
+	}
+
 	if o.FileSettings.EnableFileAttachments == nil {
 		o.FileSettings.EnableFileAttachments = new(bool)
 		*o.FileSettings.EnableFileAttachments = true

model/config_test.go

@@ -24,3 +24,12 @@ func TestConfigDefaultEmailNotificationContentsType(t *testing.T) {
 		t.Fatal("EmailSettings.EmailNotificationContentsType should default to 'full'")
 	}
 }
+
+func TestConfigDefaultFileSettingsS3SSE(t *testing.T) {
+	c1 := Config{}
+	c1.SetDefaults()
+
+	if *c1.FileSettings.AmazonS3SSE != false {
+		t.Fatal("FileSettings.AmazonS3SSE should default to false")
+	}
+}