VOL-1867 move simulated olt from voltha-go to voltha-simolt-adapter

Sourced from voltha-go commit 251a11c0ffe60512318a644cd6ce0dc4e12f4018

Change-Id: I8e7ee4da1fed739b3c461917301d2729a79307f5
diff --git a/vendor/go.uber.org/zap/buffer/pool.go b/vendor/go.uber.org/zap/buffer/pool.go
new file mode 100644
index 0000000..8fb3e20
--- /dev/null
+++ b/vendor/go.uber.org/zap/buffer/pool.go
@@ -0,0 +1,49 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package buffer
+
+import "sync"
+
+// A Pool is a type-safe wrapper around a sync.Pool.
+type Pool struct {
+	p *sync.Pool
+}
+
+// NewPool constructs a new Pool.
+func NewPool() Pool {
+	return Pool{p: &sync.Pool{
+		New: func() interface{} {
+			return &Buffer{bs: make([]byte, 0, _size)}
+		},
+	}}
+}
+
+// Get retrieves a Buffer from the pool, creating one if necessary.
+func (p Pool) Get() *Buffer {
+	buf := p.p.Get().(*Buffer)
+	buf.Reset()
+	buf.pool = p
+	return buf
+}
+
+func (p Pool) put(buf *Buffer) {
+	p.p.Put(buf)
+}