Aggregation: Improve prefix fixup matching

Utilize the new array of top level collection URIs to determine if a
given URI in the response needs to have the aggregation prefix added.
This removes the need to check for specific collections like
/redfish/v1/UpdateService/FirmwareInventory which do not fit the
generic format of /redfish/v1/<collection>.

Future patches will use this same approach to improve the logic for
initially determining if and how a request should be aggregated.

This patch also adds a series of unit tests for the function
responsible for adding a prefix to a given URI.  Cases covered include
valid URIs that involve a selection of aggregated resources, top level
collection URIs, other invalid URIs, and URIs with a trailing "/".

Tested:
Unit tests pass.

Signed-off-by: Carson Labrado <clabrado@google.com>
Change-Id: I676983d3c77ae3126c04e9f57ad8698c51df2675
diff --git a/scripts/generate_schema_collections.py b/scripts/generate_schema_collections.py
index c9f8b59..d6efa0e 100755
--- a/scripts/generate_schema_collections.py
+++ b/scripts/generate_schema_collections.py
@@ -266,17 +266,17 @@
             "\n"
             "namespace redfish\n"
             "{{\n"
-            '// Note that each URI actually begins with "/redfish/v1/"\n'
+            '// Note that each URI actually begins with "/redfish/v1"\n'
             "// They've been omitted to save space and reduce search time\n"
             "constexpr std::array<std::string_view, {TOTAL}> "
             "topCollections{{\n".format(WARNING=WARNING, TOTAL=TOTAL)
         )
 
         for collection in sorted(top_collections):
-            # All URIs start with "/redfish/v1/".  We can omit that portion to
+            # All URIs start with "/redfish/v1".  We can omit that portion to
             # save memory and reduce lookup time
             hpp_file.write(
-                '    "{}",\n'.format(collection.split("/redfish/v1/")[1])
+                '    "{}",\n'.format(collection.split("/redfish/v1")[1])
             )
 
         hpp_file.write("};\n} // namespace redfish\n")