Add do_ prefix to command functions

Preparing for renaming "fetch" to "cache" - the cache() function will
shadow the cache module. We can rename the imports or the function to
avoid this. Renaming the import is bad since it makes it harder to
understand the code. Renaming the functions is good since it helps to
understand what is a command function.

Signed-off-by: Nir Soffer <nsoffer@redhat.com>

test/drenv/__main__.py

@@ -59,7 +59,7 @@ def parse_args():
         required=True,
     )
 
-    start_parser = add_command(sp, "start", start, help="start an environment")
+    start_parser = add_command(sp, "start", do_start, help="start an environment")
     start_parser.add_argument(
         "--skip-tests",
         dest="run_tests",
@@ -73,23 +73,23 @@ def parse_args():
         help="Do not run addons 'start' hooks",
     )
 
-    stop_parser = add_command(sp, "stop", stop, help="stop an environment")
+    stop_parser = add_command(sp, "stop", do_stop, help="stop an environment")
     stop_parser.add_argument(
         "--skip-addons",
         dest="run_addons",
         action="store_false",
         help="Do not run addons 'stop' hooks",
     )
 
-    add_command(sp, "delete", delete, help="delete an environment")
-    add_command(sp, "suspend", suspend, help="suspend virtual machines")
-    add_command(sp, "resume", resume, help="resume virtual machines")
-    add_command(sp, "dump", dump, help="dump an environment yaml")
-    add_command(sp, "fetch", fetch, help="cache environment resources")
+    add_command(sp, "delete", do_delete, help="delete an environment")
+    add_command(sp, "suspend", do_suspend, help="suspend virtual machines")
+    add_command(sp, "resume", do_resume, help="resume virtual machines")
+    add_command(sp, "dump", do_dump, help="dump an environment yaml")
+    add_command(sp, "fetch", do_fetch, help="cache environment resources")
 
-    add_command(sp, "clear", clear, help="cleared cached resources", envfile=False)
-    add_command(sp, "setup", setup, help="setup minikube for drenv", envfile=False)
-    add_command(sp, "cleanup", cleanup, help="cleanup minikube", envfile=False)
+    add_command(sp, "clear", do_clear, help="cleared cached resources", envfile=False)
+    add_command(sp, "setup", do_setup, help="setup minikube for drenv", envfile=False)
+    add_command(sp, "cleanup", do_cleanup, help="cleanup minikube", envfile=False)
 
     return parser.parse_args()
 
@@ -162,22 +162,22 @@ def handle_termination_signal(signo, frame):
     sys.exit(1)
 
 
-def setup(args):
+def do_setup(args):
     logging.info("[main] Setting up minikube for drenv")
     minikube.setup_files()
 
 
-def cleanup(args):
+def do_cleanup(args):
     logging.info("[main] Cleaning up minikube")
     minikube.cleanup_files()
 
 
-def clear(args):
+def do_clear(args):
     logging.info("[main] Clearing cache")
     cache.clear()
 
 
-def fetch(args):
+def do_fetch(args):
     env = load_env(args)
     start = time.monotonic()
     logging.info("[%s] Fetching", env["name"])
@@ -196,7 +196,7 @@ def fetch(args):
     )
 
 
-def start(args):
+def do_start(args):
     env = load_env(args)
     start = time.monotonic()
     logging.info("[%s] Starting environment", env["name"])
@@ -228,7 +228,7 @@ def start(args):
     )
 
 
-def stop(args):
+def do_stop(args):
     env = load_env(args)
     start = time.monotonic()
     logging.info("[%s] Stopping environment", env["name"])
@@ -241,7 +241,7 @@ def stop(args):
     )
 
 
-def delete(args):
+def do_delete(args):
     env = load_env(args)
     start = time.monotonic()
     logging.info("[%s] Deleting environment", env["name"])
@@ -259,21 +259,21 @@ def delete(args):
     )
 
 
-def suspend(args):
+def do_suspend(args):
     env = load_env(args)
     logging.info("[%s] Suspending environment", env["name"])
     for profile in env["profiles"]:
         run("virsh", "-c", "qemu:///system", "suspend", profile["name"])
 
 
-def resume(args):
+def do_resume(args):
     env = load_env(args)
     logging.info("[%s] Resuming environment", env["name"])
     for profile in env["profiles"]:
         run("virsh", "-c", "qemu:///system", "resume", profile["name"])
 
 
-def dump(args):
+def do_dump(args):
     env = load_env(args)
     yaml.dump(env, sys.stdout)