Parsing Error 'resolv.conf' file

[maneta]

From expanding the tests on the PR #618 we have found several issues with parse_nameservers function in the gateway/src/resty/resolver.lua file.

Identified Problems

1. The bellow expression will do not catch the case where server == resolver because the function to.string of the meta table resolver is concatenating "serverName_ip".."ServerNamePort"

    if server and server ~= resolver then
      insert(nameservers, nameserver.new(server))
    end

2. The parsing of search local.domain #foobar brakes the regex

Those are the identified cases I found that brakes the resolver. Maybe should extend a bit the test cases.

To Do:

• correct server == resolver case
• correct parsing search local.domain #foobar

[mikz]

Fixed by #618, #635, #636