Add IPAM Config Options to match libnetwork

Signed-off-by: Ryan Belgrave <rmb1993@gmail.com>

docs/reference/commandline/network_create.md

@@ -22,6 +22,7 @@ parent = "smn_cli"
     --ip-range=[]            Allocate container ip from a sub-range
     --ipam-driver=default    IP Address Management Driver
     -o --opt=map[]           Set custom network plugin options
+    --ipam-opt=map[]         Set custom IPAM plugin options
     --subnet=[]              Subnet in CIDR format that represents a network segment
 
 Creates a new network. The `DRIVER` accepts `bridge` or `overlay` which are the

man/docker-network-create.1.md

@@ -13,6 +13,7 @@ docker-network-create - create a new network
 [**--internal**]
 [**--ip-range**=*[]*]
 [**--ipam-driver**=*default*]
+[**--ipam-opt**=*map[]*]
 [**-o**|**--opt**=*map[]*]
 [**--subnet**=*[]*]
 NETWORK-NAME
@@ -148,6 +149,9 @@ If you want to create an externally isolated `overlay` network, you can specify
 **--ipam-driver**=*default*
   IP Address Management Driver
 
+**--ipam-opt**=map[]
+  Set custom IPAM plugin options
+
 **-o**, **--opt**=map[]
   Set custom network plugin options