Make env a commandline option instead of a fabric task

fix

@@ -47,8 +47,8 @@ else:
             littlechef.loglevel = 'debug'
             sys.argv.remove('--debug')
         for arg in sys.argv:
-            if "env:" in arg:
-                chef_environment = arg.split(":")[1]
+            if "--env=" in arg:
+                chef_environment = arg.split("=")[1]
                 if chef_environment == '':
                     print("Error: No environment was given", file=sys.stderr)
                     sys.exit(1)

tests/test_command.py

@@ -87,13 +87,13 @@ def test_list_commands(self):
 class TestEnvironment(BaseTest):
     def test_no_value(self):
         """Should error out when the env value is empty"""
-        resp, error = self.execute([fix, 'list_nodes', 'env:'])
+        resp, error = self.execute([fix, 'list_nodes', '--env='])
         self.assertEquals(resp, "")
         self.assertTrue("Error: No environment was given" in error, error)
 
     def test_valid_environment(self):
         """Should set the chef_environment value when one is given"""
-        resp, error = self.execute([fix, 'list_nodes', 'env:staging'])
+        resp, error = self.execute([fix, 'list_nodes', '--env=staging'])
         self.assertEquals(error, "", error)
         self.assertTrue("Environment: staging" in resp, resp)