Rex::Text::Ui::Table.new[find_by_colnames]

Add :[] to ...Ui::Table allowing user to pass multiple colnames.
Returns a new table with only those columns and their rows.

Useful when using Rex to filter output, prep CSV, etc.

Testing:
```
t = Rex::Ui::Text::Table.new('Columns' => ['a','b','c'])
t << ['x','y','z']
t << ['p','q','r']
t['a','c']

=> a  c
-  -
p  r
x  z
```
whitespace cleanup
Allow passing MaxChar to Rex::Ui::Text::Table cols

Passing MaxChar allows setting the maximum number of characters
printed within a specific column during the row_to_s method.
This does not affect CSV output nor truncate the actual data.
Meant for tidying up long console ouput.

Example: cleaned up cmd_creds to show proof and not maul tables
with unix session data.
Allow selection (and ordering) of column names

Build the creds table with only the columns we select,
in the order selected.

Example:

creds -s ssh -u root -S pubk -c port,user,proof

Credentials
===========

port  user  proof
----  ----  -----
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=a6:...
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=a6:...
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=a6:...
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=a6:...
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=30:...
22    root  KEY=37:...
22    root  KEY=a6:...
22    root  KEY=30:...
22    root  KEY=37:...
fix copypasta
Enumerate AD Domain via NTLM Authentication

Add functionality to attempt an NTLM auth against common directories
to try to enumerate the AD domain. If a domain is found this will be
prepended to the authentication requests, otherwise it's business as
usual.
Minor fixes to syntax and error handling
Domain enumeration put in own function

The code to enumerate the AD domain is now in its own function

Additionally, a new advanced option has been added which controls
whether or not the domain enumeration will occur so that if it is
not wanted the user can disabled it. By default this is set to
enumerate the AD domain.

If AD_DOMAIN is already specified then this will be used and no
auto enumeration will occur.
Removed blanks at EOL

Fixed blanks at EOL per msftidy messages
Default to exe-small
Merge for retab
Retab changes for PR #2320
Merge for retab
Retab changes for PR #2273
Merge for retab
Retab changes for PR #2093
Merge pull request #2 from tabassassin/retab/pr/2273

Retab/pr/2273
Merge pull request #9 from tabassassin/retab/pr/2320

Retab/pr/2320
Merge for retab
Retab changes for PR #1681