Still install conda-forge-build-setup in case it is used selectively.

This is handy when the upload script works fine, but the setup step
needs to be overridden. In these cases, we want to be sure
`conda-forge-build-setup` is still provided so the upload script can be
used from it if needed.

conda_smithy/configure_feedstock.py

@@ -83,7 +83,6 @@ def render_run_docker_build(jinja_env, forge_config, forge_dir):
             """.format(recipe_dir=forge_config["recipe_dir"]))
         else:
             build_setup += textwrap.dedent("""\
-                conda install --yes --quiet conda-forge-build-setup
                 source run_conda_forge_build_setup
 
             """)
@@ -236,7 +235,6 @@ def render_travis(jinja_env, forge_config, forge_dir):
             """.format(recipe_dir=forge_config["recipe_dir"]))
         else:
             build_setup += textwrap.dedent("""\
-                conda install --yes --quiet conda-forge-build-setup
                 source run_conda_forge_build_setup
             """)
 
@@ -399,7 +397,6 @@ def render_appveyor(jinja_env, forge_config, forge_dir):
         else:
             build_setup += textwrap.dedent("""\
 
-                conda install -n root --quiet --yes conda-forge-build-setup
                 run_conda_forge_build_setup
             """)
 

conda_smithy/templates/appveyor.yml.tmpl

@@ -60,6 +60,7 @@ install:
     - cmd: set PYTHONUNBUFFERED=1
 
     - cmd: conda install -n root --quiet --yes obvious-ci
+    - cmd: conda install -n root --quiet --yes conda-forge-build-setup
     {% if build_setup -%}
     {{ build_setup }}{% endif %}
 

conda_smithy/templates/run_docker_build.tmpl

@@ -40,6 +40,7 @@ echo "$config" > ~/.condarc
 # A lock sometimes occurs with incomplete builds. The lock file is stored in build_artefacts.
 conda clean --lock
 
+conda install --yes --quiet conda-forge-build-setup
 {% if build_setup -%}
 {{ build_setup }}{% endif -%}
 

conda_smithy/templates/travis.yml.tmpl

@@ -49,6 +49,7 @@ install:
       conda config --add channels {{ channel }}
       {%- endfor %}
       conda config --set show_channel_urls true
+      conda install --yes --quiet conda-forge-build-setup
       {% if build_setup -%}
       {{ build_setup }}{% endif %}