[roll] Roll fuchsia [sdk/ctf] Record a test's plasa_element in the manifest

Each test manifest entry has a new 'plasa_element' field.
The field is currently just used to associate test(s) with plasa
elements using test_manifest.json and is not validated in any way.
Future improvements might include the following:
- Validation that plasa_element follows the <kind>/<elem> pattern.
- Validation that plasa_element name is unique.
- FIDL, shared library and host-tool specific templates to format the
  plasa_element string internally.

Examples:

- A test with the default empty string:

  {
    "archive_name": "cts-hello-world-rust-tests",
    "component_name": "cts-hello-world-rust.cm",
    "package": "cts-hello-world-rust-tests",
    "plasa_element": ""
  },

- A test with the element filled in.

  {
    "archive_name": "fuchsia-diagnostics-tests",
    "component_name": "diagnostics-test.cm",
    "package": "fuchsia-diagnostics-tests",
    "plasa_element": "fidl/fuchsia.diagnostics/ArchiveAccessor"
  },

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/737446
Original-Revision: d11b415fc38dafc0484df66d30dfff6c796023b2
GitOrigin-RevId: 879d548c1e9f8c873c836f40ccdd35db935cfc6c
Change-Id: Ie9cc698eb124902968b4d8921fab5d1cf61923e1

stem

diff --git a/stem b/stem
index 28b3624..15c802f 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="04f14c3b333aeab01ea2c1ee3c779164df2ed200"/>
+             revision="d11b415fc38dafc0484df66d30dfff6c796023b2"/>
   </projects>
   <hooks>
     <hook name="install-environment"