Adding yaml-cpp in fboss oss build

Summary: The new library firmware_storage needs the yaml-cpp. For OSS build this diff adds the yaml-cpp library to manifest

Reviewed By: shri-khare

Differential Revision: D25115387

fbshipit-source-id: 9ed1c374df7e87f284c48d366095a20183719534

Author: Rajan Kumar

build/fbcode_builder/manifests/yaml-cpp

@@ -0,0 +1,20 @@
+[manifest]
+name = yaml-cpp
+
+[download]
+url = https://github.com/jbeder/yaml-cpp/archive/yaml-cpp-0.6.2.tar.gz
+sha256 = e4d8560e163c3d875fd5d9e5542b5fd5bec810febdcba61481fe5fc4e6b1fd05
+
+[build.os=linux]
+builder = cmake
+subdir = yaml-cpp-yaml-cpp-0.6.2
+
+[build.not(os=linux)]
+builder = nop
+
+[dependencies]
+boost
+googletest
+
+[cmake.defines]
+YAML_CPP_BUILD_TESTS=OFF