Update purityos.rb (#2678)

* Update purityos.rb

PurityOS 6.3.5 does some kind of color-coding/ cursor-positioning things when connecting with SSH. Adjust the terminalsettings to dumb.

* Update purityos.rb

Removed lines of expired purealerts and VEEAM- Snapshots that trigger a change notification.

* Update CHANGELOG.md

Terminalmode set to "dumb", removed purealerts and VEEAM Snapshots

* Update purityos.rb

* Update purityos.rb

Fixed typo "class" instead of "lass"

CHANGELOG.md

@@ -126,6 +126,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - fixed secret handling for rip authentication in casa model #2648 (@grahamjohnston)
 - stripped IoT-detect version for Fortigate devices
 - Fix expect usage in models on telnet. Tested with Netgear GS108T. (@arrjay)
+- purityos: at least v6.3.5 needs other terminal settings (@elliot64)
+- purityos: remove purealerts and VEEAM snapshots from backed up config (@elliot64)
 
 ## [0.28.0 - 2020-05-18]
 

lib/oxidized/model/purityos.rb

@@ -4,9 +4,16 @@ class PurityOS < Oxidized::Model
   prompt /\w+@\S+(\s+\S+)*\s?>\s?$/
   comment '# '
 
-  cmd 'pureconfig list'
+  cmd 'pureconfig list' do |cfg|
+    cfg.gsub! /^purealert flag \d+$/, ''
+    cfg.gsub! /(.*VEEAM-StorageLUNSnap-[0-9a-f].*)/, ''
+    cfg.gsub! /(.*VEEAM-ExportLUNSnap-[0-9A-F].*)/, ''
+    # remove empty lines
+    cfg.each_line.reject { |line| line.match /^[\r\n\s\u0000#]+$/ }.join
+  end
 
   cfg :ssh do
+    pty_options(term: "dumb")
     pre_logout 'exit'
   end
 end