Merge pull request #4204 from esl/cets-delayed-check-servers

Update CETS with pause-on-all nodes fix

rebar.lock

@@ -8,7 +8,7 @@
  {<<"certifi">>,{pkg,<<"certifi">>,<<"2.9.0">>},1},
  {<<"cets">>,
   {git,"https://github.com/esl/cets.git",
-       {ref,"0e3f83ed3ef2e75f833e068f9c53610b72ad75e7"}},
+       {ref,"7eca9e949c83e759a8d5aeae4135ff738a89899a"}},
   0},
  {<<"cowboy">>,{pkg,<<"cowboy">>,<<"2.9.0">>},0},
  {<<"cowboy_swagger">>,{pkg,<<"cowboy_swagger">>,<<"2.5.1">>},0},