Merge "Add python-searchlightclient to list of adopters."

Author: Jenkins

doc/source/plugins.rst

@@ -37,6 +37,7 @@ python-manilaclient            using argparse
 python-mistralclient           using OpenStackClient
 python-muranoclient            using argparse
 python-saharaclient            using OpenStackClient
+python-searchlightclient       using OpenStackClient
 python-troveclient             using argparse
 python-zaqarclient             using OpenStackClient
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