feat: consolidate most distros into "starter" (#2516)

# What does this PR do?

* Removes a bunch of distros
* Removed distros were added into the "starter" distribution
* Doc for "starter" has been added
* Partially reverts https://github.com/meta-llama/llama-stack/pull/2482
  since inference providers are disabled by default and can be turned on
  manually via env variable.
* Disables safety in starter distro

Closes: https://github.com/meta-llama/llama-stack/issues/2502.

~Needs: https://github.com/meta-llama/llama-stack/pull/2482 for Ollama
to work properly in the CI.~

TODO:

- [ ] We can only update `install.sh` when we get a new release.
- [x] Update providers documentation
- [ ] Update notebooks to reference starter instead of ollama

Signed-off-by: Sébastien Han <seb@redhat.com>

llama_stack/templates/watsonx/__init__.py

@@ -3,5 +3,3 @@
 #
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
-
-from .watsonx import get_distribution_template  # noqa: F401

llama_stack/templates/watsonx/doc_template.md

@@ -1,74 +0,0 @@
----
-orphan: true
----
-# watsonx Distribution
-
-```{toctree}
-:maxdepth: 2
-:hidden:
-
-self
-```
-
-The `llamastack/distribution-{{ name }}` distribution consists of the following provider configurations.
-
-{{ providers_table }}
-
-{% if run_config_env_vars  %}
-
-### Environment Variables
-
-The following environment variables can be configured:
-
-{% for var, (default_value, description) in run_config_env_vars.items() %}
-- `{{ var }}`: {{ description }} (default: `{{ default_value }}`)
-{% endfor %}
-{% endif %}
-
-{% if default_models %}
-### Models
-
-The following models are available by default:
-
-{% for model in default_models %}
-- `{{ model.model_id }} {{ model.doc_string }}`
-{% endfor %}
-{% endif %}
-
-
-### Prerequisite: API Keys
-
-Make sure you have access to a watsonx API Key. You can get one by referring [watsonx.ai](https://www.ibm.com/docs/en/masv-and-l/maximo-manage/continuous-delivery?topic=setup-create-watsonx-api-key).
-
-
-## Running Llama Stack with watsonx
-
-You can do this via Conda (build code), venv or Docker which has a pre-built image.
-
-### Via Docker
-
-This method allows you to get started quickly without having to build the distribution code.
-
-```bash
-LLAMA_STACK_PORT=5001
-docker run \
-  -it \
-  -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-  -v ./run.yaml:/root/my-run.yaml \
-  llamastack/distribution-{{ name }} \
-  --config /root/my-run.yaml \
-  --port $LLAMA_STACK_PORT \
-  --env WATSONX_API_KEY=$WATSONX_API_KEY \
-  --env WATSONX_PROJECT_ID=$WATSONX_PROJECT_ID \
-  --env WATSONX_BASE_URL=$WATSONX_BASE_URL
-```
-
-### Via Conda
-
-```bash
-llama stack build --template watsonx --image-type conda
-llama stack run ./run.yaml \
-  --port $LLAMA_STACK_PORT \
-  --env WATSONX_API_KEY=$WATSONX_API_KEY \
-  --env WATSONX_PROJECT_ID=$WATSONX_PROJECT_ID
-```