Updated Greengrass IPC client

• Updated Greengrass IPC client (#149)

TLS alert fix for device advisor

• Pull in s2n shutdown fix via crt; add resource waits on samples
• Add long operation timeout to support tls shutdown delay for device advisor

Protocol Operation Timeout Added

• withProtocolOperationTimeoutMs method added to AwsIotMqttConnectionBuilder, which will control timeout value for requests that response is required on healthy connection. If a response is not received within this interval, the request made by the connection will fail. Applied to publish (QoS>0) and unsubscribe

EventStreamRPC connect ack bug fix

• Fixes connect ack bug released recently in EventStream RPC

GCC 4.1 fixes

v1.2.14

latest submodules (#133)

MqttMessage now contains qos, retain, dup

• MqttMessage now contains qos, retain, dup, members.
• Fix bug when writing large payloads to network.
• Add support for nested TLS connections when using an HTTP proxy

Nested TLS support

• Adds support for nested tls connections when using a proxy

TryLock fix on Windows

• Fixes an issue on Windows builds that caused a fatal assert in the try-lock mutex function

Greengrass IPC client support

• Added Greengrass IPC client
• Added EventStream RPC capability

Update s2n to release v0.10.19

• Update s2n to release v0.10.19