explicit use of std::vector instead of buffer/Buffer

There were several scoped 'using buffer = std::vector<uint8_t>;' in
header files. This consolidates the code base to use
std::vector<uint8_t> instead of buffer or Buffer. This makes the code
easier to read and debug.

Change-Id: I918a0f6ca9b8e4b9d331175dccff45cbf4c8379d
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/sol/sol_manager.cpp b/sol/sol_manager.cpp
index 889065f..b6cf31d 100644
--- a/sol/sol_manager.cpp
+++ b/sol/sol_manager.cpp
@@ -52,7 +52,7 @@
     }
 }
 
-int Manager::writeConsoleSocket(const Buffer& input) const
+int Manager::writeConsoleSocket(const std::vector<uint8_t>& input) const
 {
     auto inBuffer = input.data();
     auto inBufferSize = input.size();