Removed syntastic and replaced it with ale

Read more here:
https://github.com/w0rp/ale

sources_non_forked/ale/ale_linters/puppet/puppet.vim

@@ -0,0 +1,28 @@
+" Author: Alexander Olofsson <alexander.olofsson@liu.se>
+
+function! ale_linters#puppet#puppet#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    " Error: Could not parse for environment production: Syntax error at ':' at /root/puppetcode/modules/nginx/manifests/init.pp:43:12
+    " Error: Could not parse for environment production: Syntax error at '='; expected '}' at /root/puppetcode/modules/pancakes/manifests/init.pp:5"
+
+    let l:pattern = '^Error: .*: \(.\+\) at .\+\.pp:\(\d\+\):\=\(\d*\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'text': l:match[1],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('puppet', {
+\   'name': 'puppet',
+\   'executable': 'puppet',
+\   'output_stream': 'stderr',
+\   'command': 'puppet parser validate --color=false %t',
+\   'callback': 'ale_linters#puppet#puppet#Handle',
+\})