Replace `fab_run('local', …)` with direct `local()` calls

The `fab_run()` function does not add any behavior for local calls, only
ambiguity of the command execution environment.

Inlining `local()` calls contributes to a clear separation of enrivonments.

drush.py

@@ -19,7 +19,7 @@
 from __future__ import unicode_literals
 from datetime import datetime
 
-from fabric.api import task, roles, env
+from fabric.api import task, roles, env, local
 from fabric.colors import red, green
 from fabric.contrib.console import confirm
 from fabric.utils import abort
@@ -61,10 +61,10 @@ def make(action='install'):
         drush_opts += " --working-copy --no-gitinfofile"
 
     if not h.fab_exists('local', env.site_root):
-        h.fab_run('local', "mkdir {}".format(env.site_root))
+        local('mkdir {}'.format(env.site_root))
 
     with h.fab_cd('local', env.site_root):
-        h.fab_run('local', 'drush make {} {} -y'.format(drush_opts, env.makefile))
+        local('drush make {} {} -y').format(drush_opts, env.makefile))
 
 
 @task

helpers.py

@@ -191,7 +191,7 @@ def init_db(role='docker'):
     """
     Create a database and a user that can access it.
     """
-    container_ip = fab_run('local', 'docker inspect -f "{{{{.NetworkSettings.IPAddress}}}}" '
+    container_ip = local('docker inspect -f "{{{{.NetworkSettings.IPAddress}}}}" '
                                                  '{}_container'.format(env.project_name), capture=True)
 
     docker_iface_ip = [(s.connect((container_ip, 80)), s.getsockname()[0], s.close())

patternlab.py

 from __future__ import unicode_literals
 
-from fabric.api import task, roles, env
+from fabric.api import task, roles, env, local, lcd
 from fabric.colors import green
 
 import helpers as h
@@ -12,11 +12,10 @@ def build():
     """
     Generate the PatternLab static site
     """
-    role = 'local'
     workspace = env.docker_workspace
     host = env.site_hostname
     site_root = env.docker_site_root
 
-    with h.fab_cd(role, env.patternlab_dir):
-        h.fab_run(role, 'touch public/styleguide/html/styleguide.html')
-        h.fab_run(role, 'php core/builder.php -g')
+    with lcd(env.patternlab_dir):
+        local('touch public/styleguide/html/styleguide.html')
+        local('php core/builder.php -g')