fix #88 and many others with Failed to handshake

[vitalik-dj]

Hello! Please merge this pull request because this issue prevents the use of this plugin already for two years!!! There are many issues related to this problem but no one fixed it. The fix is elementary.

Error: MONGODB | Failed to handshake with test-mongo: 27017, wrong number of arguments (given 2, expected 1)

Backtrace :
"/usr/share/logstash/vendor/logstash-output-mongodb/lib/logstash/outputs/bson/logstash_timestamp.rb:37:in from_bson'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bson-4.15.0-java/lib/bson/hash.rb:123:in from_bson'"

File: bson-4.15.0-java/lib/bson/hash.rb:123 ^

115 while (type = buffer.get_byte) != NULL_BYTE
116 field = buffer.get_cstring
117 cls = BSON::Registry.get(type, field)
118 value = if options.empty?
119 # Compatibility with the older Ruby driver versions which define
120 # a DBRef class with from_bson accepting a single argument.
121 cls.from_bson(buffer)
122 else
123 cls.from_bson(buffer, **options) <<- the call here with 2 arguments, but all definitions were done for single arg
124 end
125 hash.store(field, value)
126 end

[cla-checker-service]

💚 CLA has been signed