[Documentation] host NQN configuration parameter added
Add documentation to newly introduced host NQN configuration parameter
for the NVMf storage tier:
crail.storage.nvmf.hostnqn
Defaults to random 128bit UUID. Datanodes can be started with
command line argument -hostnqn to override configuration file
parameter

Signed-off-by: Jonas Pfefferle <pepperjo@apache.org>
diff --git a/doc/source/config.rst b/doc/source/config.rst
index 21c1626..50d91b3 100644
--- a/doc/source/config.rst
+++ b/doc/source/config.rst
@@ -197,6 +197,7 @@
 :code:`crail.storage.nvmf.port`             50025                       Port of NVMf target
 :code:`crail.storage.nvmf.nqn`              nqn.2017-06.io.crail:cnode  NVMe qualified name of NVMf controller
 :code:`crail.storage.nvmf.namespace`        1                           Namespace of NVMe device
+:code:`crail.storage.nvmf.hostnqn`          <random 128bit UUID>        NVMe qualified name of host
 ========================================    ==========================  ============================================================
 
 Advanced properties:
diff --git a/doc/source/run.rst b/doc/source/run.rst
index fc80f84..1fd235b 100644
--- a/doc/source/run.rst
+++ b/doc/source/run.rst
@@ -104,6 +104,7 @@
 :code:`-p <port>`          :code:`crail.storage.nvmf.port`
 :code:`-nqn <nqn>`         :code:`crail.storage.nvmf.nqn`
 :code:`-n <namespace_id>`  Namespace id to use (default 1)
+:code:`-hostnqn <nqn>`     :code:`crail.storage.nvmf.hostnqn`
 =========================  =====================================
 
 Larger deployments