Drop support for mongodb versions before 2.6

[ekohl]

No description provided.

[ekohl]

I considered dropping the old config file format but it may break on upgrades when the file hasn't been rewritten yet:

puppet-mongodb/lib/facter/is_master.rb

Lines 21 to 37 in ea3feb2

	def get_options_from_keyvalue_config(file)
	config = {}
	File.readlines(file).map do |line|
	k, v = line.split('=')
	config[k.rstrip] = v.lstrip.chomp if k && v
	end
	result = []
	result << "--port #{config['port']}" unless config['port'].nil?
	result << "--ssl --host #{Facter.value(:fqdn)}" if config['ssl'] == 'requireSSL'
	result << "--sslPEMKeyFile #{config['sslcert']}" unless config['sslcert'].nil?
	result << "--sslCAFile #{config['sslca']}" unless config['sslca'].nil?
	result << '--ipv6' unless config['ipv6'].nil?
	result.join(' ')
	end

[ekohl]

I'll rewrite this with a .to_json as well in a separate PR in a separate PR.

[ekohl]

The docs indicate this method should also work on 3.x and 4.x but I'll look into that later when I have acceptance tests

[bastelfreak]

I am not an expert for types and providers, but this looks good to me and also the tests pass.

[llowder]

I'm not super familiar with mongo, but I didn't see any obvious red flags or things that made me stop and think "Now why is it done this way...?"

And, the tests and checks pass.