Aggregation: Check for subordinate collection

Adds a search function which is able to determine if a passed URI is a
top level collection, is uptree from a top level collection, or both.
The type being searched for depends on a second argument passed to the
function.

Each of these searches are used to add links to top level collections
which are only supported by a satellite BMC.  They all use similar steps
so rolling them into a single function cuts down on redundant code.

Adds test cases to verify the implementation is correct.

Tested:
New test cases pass

Signed-off-by: Carson Labrado <clabrado@google.com>
Change-Id: I72ae7442d5f314656b57a73aee544bca516fa7c2

0 files changed, 0 insertions, 0 deletions