Initial support for getting the leader from Zookeeper.

Some tests included for making sure the JSON blob pulled from Zookeeper
is correct.

Updated client to be able to take Zookeeper json cluster config that is
currently being used in aurora (clusters.json usually located at
/etc/aurora/cluster.json).

Changed error messages to no longer have a period at the end as that was
throwing off printing of the error.

Modified samuel's ZK library slightly to stop verbose logging using a
NoOpLogger from stackoverflow.

vendor/git.apache.org/thrift.git/lib/go/thrift/framed_transport.go

@@ -48,7 +48,7 @@ func NewTFramedTransportFactory(factory TTransportFactory) TTransportFactory {
 }
 
 func NewTFramedTransportFactoryMaxLength(factory TTransportFactory, maxLength uint32) TTransportFactory {
-        return &tFramedTransportFactory{factory: factory, maxLength: maxLength}
+	return &tFramedTransportFactory{factory: factory, maxLength: maxLength}
 }
 
 func (p *tFramedTransportFactory) GetTransport(base TTransport) TTransport {
@@ -164,4 +164,3 @@ func (p *TFramedTransport) readFrameHeader() (uint32, error) {
 func (p *TFramedTransport) RemainingBytes() (num_bytes uint64) {
 	return uint64(p.frameSize)
 }
-

vendor/git.apache.org/thrift.git/lib/go/thrift/iostream_transport.go

@@ -209,6 +209,5 @@ func (p *StreamTransport) WriteString(s string) (n int, err error) {
 
 func (p *StreamTransport) RemainingBytes() (num_bytes uint64) {
 	const maxSize = ^uint64(0)
-	return maxSize  // the thruth is, we just don't know unless framed is used
+	return maxSize // the thruth is, we just don't know unless framed is used
 }
-

vendor/git.apache.org/thrift.git/lib/go/thrift/protocol.go

@@ -88,9 +88,9 @@ func SkipDefaultDepth(prot TProtocol, typeId TType) (err error) {
 
 // Skips over the next data element from the provided input TProtocol object.
 func Skip(self TProtocol, fieldType TType, maxDepth int) (err error) {
-	
-    if maxDepth <= 0 {
-		return NewTProtocolExceptionWithType( DEPTH_LIMIT, errors.New("Depth limit exceeded"))
+
+	if maxDepth <= 0 {
+		return NewTProtocolExceptionWithType(DEPTH_LIMIT, errors.New("Depth limit exceeded"))
 	}
 
 	switch fieldType {

vendor/git.apache.org/thrift.git/lib/go/thrift/protocol_exception.go

@@ -60,7 +60,7 @@ func NewTProtocolException(err error) TProtocolException {
 	if err == nil {
 		return nil
 	}
-	if e,ok := err.(TProtocolException); ok {
+	if e, ok := err.(TProtocolException); ok {
 		return e
 	}
 	if _, ok := err.(base64.CorruptInputError); ok {
@@ -75,4 +75,3 @@ func NewTProtocolExceptionWithType(errType int, err error) TProtocolException {
 	}
 	return &tProtocolException{errType, err.Error()}
 }
-

vendor/git.apache.org/thrift.git/lib/go/thrift/rich_transport.go

@@ -66,4 +66,3 @@ func writeByte(w io.Writer, c byte) error {
 	_, err := w.Write(v[0:1])
 	return err
 }
-

vendor/git.apache.org/thrift.git/lib/go/thrift/simple_server.go

@@ -27,7 +27,7 @@ import (
 
 // Simple, non-concurrent server for testing.
 type TSimpleServer struct {
-	quit chan struct{}
+	quit    chan struct{}
 	stopped int64
 
 	processorFactory       TProcessorFactory

vendor/git.apache.org/thrift.git/lib/go/thrift/socket.go

@@ -161,6 +161,5 @@ func (p *TSocket) Interrupt() error {
 
 func (p *TSocket) RemainingBytes() (num_bytes uint64) {
 	const maxSize = ^uint64(0)
-	return maxSize  // the thruth is, we just don't know unless framed is used
+	return maxSize // the thruth is, we just don't know unless framed is used
 }
-

vendor/git.apache.org/thrift.git/lib/go/thrift/ssl_server_socket.go

@@ -20,9 +20,9 @@
 package thrift
 
 import (
+	"crypto/tls"
 	"net"
 	"time"
-	"crypto/tls"
 )
 
 type TSSLServerSocket struct {

vendor/git.apache.org/thrift.git/lib/go/thrift/ssl_socket.go

@@ -166,6 +166,5 @@ func (p *TSSLSocket) Interrupt() error {
 
 func (p *TSSLSocket) RemainingBytes() (num_bytes uint64) {
 	const maxSize = ^uint64(0)
-	return maxSize  // the thruth is, we just don't know unless framed is used
+	return maxSize // the thruth is, we just don't know unless framed is used
 }
-

vendor/git.apache.org/thrift.git/lib/go/thrift/transport.go

@@ -34,7 +34,6 @@ type ReadSizeProvider interface {
 	RemainingBytes() (num_bytes uint64)
 }
 
-
 // Encapsulates the I/O layer
 type TTransport interface {
 	io.ReadWriteCloser
@@ -52,7 +51,6 @@ type stringWriter interface {
 	WriteString(s string) (n int, err error)
 }
 
-
 // This is "enchanced" transport with extra capabilities. You need to use one of these
 // to construct protocol.
 // Notably, TSocket does not implement this interface, and it is always a mistake to use
@@ -65,4 +63,3 @@ type TRichTransport interface {
 	Flusher
 	ReadSizeProvider
 }
-