Description of problem:
Executing 'tgt-admin -dump' does not display full target related information.

Version:
scsi-target-utils-1.0.4-3.el6.x86_64

Steps to Reproduce:
1. Run 'tgt-admin -dump'
  
Actual results:
Will display the target names and the backing store names only (in my case).

Expected results:
The output should include all relevant information for each target, like scsi_id, scsi_sn of the devices, write-cache mode, LUN number etc.

Additional info:
The implementation of this RFE will allow an advanced target configuration from within user's source code using tgadm and tgt-admin utilities. For example, right now I have few targets defined manually in targets.conf file and I want to remove one of them using my custom Python code. If I will just remove it using tgtadm or tgt-admin the changes won't be persistent since the targets.conf still contains the relevant information regarding the removed target and simple reload of tgtd service will restore the target. BUT, if 'tgt-admin -dump' will provide a detailed targets info it will make possible simple redirect its output into targets.conf file in order to make the changes persistent without any worries to wipe out any essential target info.

Another way to deal with the situation above is adding ability to execute all tgt-admin commands in persistent mode, e.g. deleting the target using 'tgt-admin --delete target_name --force' will remove it also from the targets.conf file.