cli: add push_policy command

gateway/src/apicast/cli.lua

@@ -24,6 +24,7 @@ _M.commands = load_commands({
   'start',
   'generate',
   'console',
+  'push_policy'
 }, parser)
 
 function mt.__call(self, arg)

gateway/src/apicast/cli/command/push_policy.lua

@@ -0,0 +1,31 @@
+local setmetatable = setmetatable
+
+local policy_pusher = require('apicast.policy_pusher').new()
+
+local _M = { }
+
+local mt = { __index = _M }
+
+function mt.__call(_, opts)
+  policy_pusher:push(
+    opts.name, opts.version, opts.admin_portal_domain, opts.access_token
+  )
+end
+
+local function configure(cmd)
+  cmd:argument('name', 'the name of the policy')
+  cmd:argument('version', 'the version of the policy')
+  cmd:argument('admin_portal_domain', 'your admin portal domain. If you are using SaaS it is YOUR_ACCOUNT-admin.3scale.net')
+  cmd:argument('access_token', 'an access token that you can get from the 3scale admin portal')
+  return cmd
+end
+
+function _M.new(parser)
+  local cmd = configure(
+    parser:command('push_policy', 'Push a policy manifest to the 3scale admin portal')
+  )
+
+  return setmetatable({ parser = parser, cmd = cmd }, mt)
+end
+
+return setmetatable(_M, mt)