Match the indent for a single semicolon with the Puppet documentation

[msalway]

Change the handling of indent on the semicolon separator in resource statements so it matches the Puppet documentation example:
https://www.puppet.com/docs/puppet/7/lang_resources#resource-declaration-default-attributes

Fixes #19

Example from Puppet docs:

file {
  default:
    ensure => file,
    owner  => "root",
    group  => "wheel",
    mode   => "0600",
  ;
  ['ssh_host_dsa_key', 'ssh_host_key', 'ssh_host_rsa_key']:
    # use all defaults
  ;
  ['ssh_config', 'ssh_host_dsa_key.pub', 'ssh_host_key.pub', 'ssh_host_rsa_key.pub', 'sshd_config']:
    # override mode
    mode => "0644",
  ;
}

Currently the plugin expects this to be indented like this:

file {
  default:
    ensure => file,
    owner  => "root",
    group  => "wheel",
    mode   => "0600",
    ;
  ['ssh_host_dsa_key', 'ssh_host_key', 'ssh_host_rsa_key']:
    # use all defaults
    ;
  ['ssh_config', 'ssh_host_dsa_key.pub', 'ssh_host_key.pub', 'ssh_host_rsa_key.pub', 'sshd_config']:
    # override mode
    mode => "0644",
    ;
}

[alexjfisher]

The should indent for semi-colons not indented enough is wrong.

file {
  default:
    ensure => file,
    owner  => "root",
    group  => "wheel",
    mode   => "0600",
;
}

W: [strict_indent] indent should be 4 chars and is 0

It should be wanting 2 chars, not 4.

[alexjfisher]

More tests you can pull in in 93b09f5

[msalway]

Fixed bug with incorrect indent when fixing semicolon at start of line and added @alexjfisher's tests.

[alexjfisher]

See puppetlabs/puppet-lint#247