feat: fully switch to external provider module method

delete `providers.d` and depend on `module` for build and run. also delete `external_provider_dir` from both build and run yaml.

this forces `build.py` to only install

uv pip install llama_stack_provider_lmeval==0.2.4
uv pip install llama_stack_provider_trustyai_fms==0.2.2

rather than also grabbing dependencies like `kubernetes`

Signed-off-by: Charlie Doern <cdoern@redhat.com>

Author: cdoern

distribution/build.yaml

@@ -42,4 +42,3 @@ additional_pip_packages:
 - psycopg2-binary
 image_type: container
 image_name: llama-stack-rh
-external_providers_dir: distribution/providers.d

distribution/providers.d/remote/eval/trustyai_lmeval.yaml

@@ -68,13 +68,15 @@ providers:
   safety:
     - provider_id: trustyai_fms
       provider_type: remote::trustyai_fms
+      module: llama_stack_provider_trustyai_fms==0.2.2
       config:
         orchestrator_url: ${env.FMS_ORCHESTRATOR_URL:=}
         ssl_cert_path: ${env.FMS_SSL_CERT_PATH:=}
         shields: {}
   agents:
   - provider_id: meta-reference
     provider_type: inline::meta-reference
+    module: llama_stack_provider_lmeval==0.2.4
     config:
       persistence_store:
         type: sqlite
@@ -177,4 +179,3 @@ tool_groups:
   provider_id: rag-runtime
 server:
   port: 8321
-external_providers_dir: /opt/app-root/src/.llama/providers.d