--ls-hosts appears to have additional characters that can cause issues with list comparisions

[kambiz-aghaiepour]

latest upstream version. Please see the following:

quads --ls-hosts | head -1 | od -c

0000000 033 [ 3 8 ; 2 1 m e 1 6 - h 1 2 - 0000020 b 0 1 - f c 6 4 0 . r d u 2 . s 0000040 t a g e l a b . e x a m p l . c 0000060 o m 033 [ 0 m \n 0000067

This may be related to the filter output colors that were recently introduced. The issue is that when comparing the host list with an external list, there needs to be some way to have "clean" output that avoids the additional terminal color coding output.

[wereii]

We should probably check for sys.stdout.isatty() to drop color codes for non-terminal outputs.