Add command guide for openstack claim CLI

Change-Id: Ib7bebb90daa7c047d0d78d2856b77277552e44a7
Co-Authored-By: wangxiyuan<wangxiyuan@huawei.com>

doc/source/command-line.rst

@@ -13,3 +13,4 @@ Click the Link below for the details.
    :maxdepth: 1
 
    command/queue
+   command/claim

doc/source/command/claim.rst

@@ -0,0 +1,122 @@
+Claim
+=====
+
+For help on a specific :command:`openstack claim` command, enter:
+
+.. code-block:: console
+
+   $ openstack claim COMMAND -h/--help
+
+The four commands:
+
+.. code-block:: console
+
+      claim create
+      claim query
+      claim release
+      claim renew
+
+.. _openstack_claim_create:
+
+openstack claim create
+----------------------
+
+.. code-block:: console
+
+   usage: openstack claim create [-h] [-f {csv,json,table,value,yaml}]
+                                 [-c COLUMN] [--max-width <integer>] [--noindent]
+                                 [--quote {all,minimal,none,nonnumeric}]
+                                 [--ttl <ttl>] [--grace <grace>]
+                                 [--limit <limit>]
+                                 <queue_name>
+
+Create claim and return a list of claimed messages.
+
+**Positional arguments:**
+
+``<queue_name>``
+  Name of the queue to be claim.
+
+**Optional arguments:**
+
+``--ttl <ttl>``
+  Time to live in seconds for claim.
+
+``--grace <grace>``
+  The message grace period in seconds.
+
+``--limit <limit>``
+  Claims a set of messages, up to limit.
+
+
+.. _openstack_claim_query:
+
+openstack claim query
+---------------------
+
+.. code-block:: console
+
+   usage: openstack claim query [-h] [-f {csv,json,table,value,yaml}] [-c COLUMN]
+                                [--max-width <integer>] [--noindent]
+                                [--quote {all,minimal,none,nonnumeric}]
+                                <queue_name> <claim_id>
+
+Display claim details.
+
+**Positional arguments:**
+
+``<queue_name>``
+  Name of the claimed queue.
+
+``<claim_id>``
+  ID of the claim.
+
+.. _openstack_claim_release:
+
+openstack claim release
+-----------------------
+
+.. code-block:: console
+
+   usage: openstack claim release [-h] <queue_name> <claim_id>
+
+Delete a claim.
+
+**Positional arguments:**
+
+``<queue_name>``
+  Name of the claimed queue.
+
+``<claim_id>``
+  Claim ID to delete.
+
+.. _openstack_claim_renew:
+
+openstack claim renew
+---------------------
+
+.. code-block:: console
+
+   usage: openstack claim renew [-h] [-f {csv,json,table,value,yaml}] [-c COLUMN]
+                                [--max-width <integer>] [--noindent]
+                                [--quote {all,minimal,none,nonnumeric}]
+                                [--ttl <ttl>] [--grace <grace>]
+                                <queue_name> <claim_id>
+
+Renew a claim.
+
+**Positional arguments:**
+
+``<queue_name> ``
+  Name of the claimed queue.
+
+``<claim_id>``
+  Claim ID.
+
+**Optional arguments:**
+
+``--ttl <ttl>``
+  Time to live in seconds for claim.
+
+``--grace <grace>``
+  The message grace period in seconds.