Fix Cloudtracker issues

```
ERROR: cloudtracker 2.1.4 has requirement boto3==1.5.32, but you'll have boto3 1.10.46 which is incompatible.
ERROR: cloudtracker 2.1.4 has requirement jmespath==0.9.3, but you'll have jmespath 0.9.4 which is incompatible.
ERROR: cloudtracker 2.1.4 has requirement pyyaml==4.2b4, but you'll have pyyaml 5.2 which is incompatible.
```