feat/fix: add s3.cacert.file/tlsVerifyClientCert to filer command (#6659)

This prevent crash filler with nil pointer dereference as s3 expect this
parameters.

New two parameters are added to filer command - copy of s3 parameters:
- s3.cacert.file - path to the TLS CA certificate file
- s3.tlsVerifyClientCert - whether to verify the client's certificate

weed/command/filer.go

@@ -119,6 +119,8 @@ func init() {
 	filerS3Options.allowEmptyFolder = cmdFiler.Flag.Bool("s3.allowEmptyFolder", true, "allow empty folders")
 	filerS3Options.allowDeleteBucketNotEmpty = cmdFiler.Flag.Bool("s3.allowDeleteBucketNotEmpty", true, "allow recursive deleting all entries along with bucket")
 	filerS3Options.localSocket = cmdFiler.Flag.String("s3.localSocket", "", "default to /tmp/seaweedfs-s3-<port>.sock")
+	filerS3Options.tlsCACertificate = cmdFiler.Flag.String("s3.cacert.file", "", "path to the TLS CA certificate file")
+	filerS3Options.tlsVerifyClientCert = cmdFiler.Flag.Bool("s3.tlsVerifyClientCert", false, "whether to verify the client's certificate")
 
 	// start webdav on filer
 	filerStartWebDav = cmdFiler.Flag.Bool("webdav", false, "whether to start webdav gateway")