fix(watchdog): keep connected, reconnect with code 1100/2110

[ceddybi]

BUGS:

• When you set a reconnectInterval: 1000, connectionWatchdogInterval: 1, even if you're connected runWatchdog disconnects and tries to create a new connection.
• FIX: If we already have a connection, no need to trigger reconnect, we should keep the current connection.

• When you're connected and you lose internet connection (e.i TWS loses connection to IBKR servers), it takes a while for Socket.onEnd to get triggered, but TWS already sends code 1100 and 2110)
• FIX: if we receive codes 1100/2110, it means we're not connected to the server, we trigger watchdog to try and reconnect.

[codeclimate]

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[ceddybi]

Test Suites: 3 failed, 46 passed, 49 total
Tests:       3 failed, 119 passed, 122 total
Snapshots:   0 total
Time:        71.605 s