If you are installing senlinclient from an OpenStack distribution, follow the guide provided by the vendor.
If you prefer installing senlinclient from source repo, you can do it by first get senlinclient code from OpenStack git repository.
$ cd /opt/stack
$ git clone https://git.openstack.org/openstack/python-senlinclient.git
Then execute the following command
$ cd python-senlinclient
$ sudo python setup.py install
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