* Updated submodule libraries to latest release
* Updated pointer for FreeRTOS-Plus-TCP
* Updated README about SNTP
* Updated link for coreSNTP on freertos.org
* Updated corePKCS11 to 'update-pkcs11submodule' branch for testing
* Update corePKCS11 version in manifest.yml
* Updated corePKCS11 pointer to v3.1.0
Co-authored-by: Oscar Michael Abrina <abrinao@amazon.com>
Co-authored-by: Archit Aggarwal <architag@amazon.com>
* Remove submodules of community and partner contribution repos, and stale directory of FreeRTOS+UDP
* Obselete NTP demo and rename of HTTP server demo folder
* Update manifest.yml
Add the FreeRTOS/coreSNTP library as a submodule (along with manifest.yaml file update) and add a demo project to showcase use of the coreSNTP library for having a SNTP client daemon in the system for periodically synchronizing system time with the internet to maintain Coordinated Univeral Time (UTC) in a device. This demo maintains UTC time of system in RAM, thereby, representing systems without a Real-Time Clock (RTC) module in the device.
Note: This demo shows use of coreSNTP library for SNTP communication with NTP/SNTP time servers in non-authenticated mode (i.e. without any security mechanism payload beyond the standard 48 bytes of NTP packet exchange between client-server).