soletta: update to 1_beta18
soletta: update to 1_beta18

There's a new Soletta version with the following changes:

 * Changes on CoAP implementation improving memory-efficiency
 * Provide node types for a lot of OIC resources data models
 * Many changes on LWM2M API in order to have a more consistent
   API for all communication protocols
 * Added API to server side events on http-server with samples.
   It was supported on http-client as well.
 * Updated GPIO implementation for Zephyr considering changes on its API
 * Implemented sol-network and sol-socket for Zephyr
 * GPIO, AIO, PWM and UART bindings for Node.js
 * Added web inspector to sol-fbp-runner
 * Dependencies of samples were fixed
 * RIOT I/O implementation was updated to match API changes
 * Fix OIC to deal with cases where IPv4 isn't enabled

Signed-off-by: Bruno Dilly <ea4fb6320c1221b6a559089d8ab97ffc53fc6586@intel.com>

solettaproject/meta-soletta,solettaproject/meta-soletta,brunobottazzini/meta-soletta,brunobottazzini/meta-soletta