CI: Update to using clang-17

Currently, llvm-17 is the stable release. Update our container and CI to
fetch and use that.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 0a8f49b..f8a3a9a 100644
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -277,16 +277,16 @@
           TEST_PY_TEST_SPEC: "version"
         sandbox_clang:
           TEST_PY_BD: "sandbox"
-          OVERRIDE: "-O clang-16"
+          OVERRIDE: "-O clang-17"
         sandbox_clang_asan:
           TEST_PY_BD: "sandbox"
-          OVERRIDE: "-O clang-16 -a ASAN"
+          OVERRIDE: "-O clang-17 -a ASAN"
           TEST_PY_TEST_SPEC: "version"
         sandbox64:
           TEST_PY_BD: "sandbox64"
         sandbox64_clang:
           TEST_PY_BD: "sandbox64"
-          OVERRIDE: "-O clang-16"
+          OVERRIDE: "-O clang-17"
         sandbox_spl:
           TEST_PY_BD: "sandbox_spl"
           TEST_PY_TEST_SPEC: "test_ofplatdata or test_handoff or test_spl"