This patch:
1. Introduces a JSON schema for FIFOs (named pipes).
2. Adds support for uploading and restoring FIFOs to camput and camget
respectively.
It includes tests for the basic schema support in pkg/schema and
integration tests for camput and camget.
This CL does not add FIFO support to the HTTP server and fs (cammount
support) code. Those will be addressed in a subsequent patch.
Change-Id: Iab926073c36e653d25e693a559178bea9bf19b9a
Brian Gitonga Marete