fix kick for tarantool 1.6

Author: igorcoding

.ci/travis-before-install.sh

@@ -17,6 +17,7 @@ if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
     sudo luarocks install https://raw.githubusercontent.com/tarantool/rocks/gh-pages/queue-scm-1.rockspec
 
 elif [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
+    brew update
     if [[ "${TARANTOOL_VERSION}" == "1_7" ]]; then
         brew install tarantool --HEAD
     else

asynctnt_queue/tube.py

@@ -196,6 +196,8 @@ async def kick(self, count):
         """
         args = (count,)
         res = await self.conn.call(self.__funcs['kick'], args)
+        if self.conn.version < (1, 7):
+            return res.body[0][0]
         return res.body[0]
 
     def statistics(self):