Merge "1. Add FIELD_COUNT_REPEATED bit masks to repeated fields that were...

Merge "1. Add FIELD_COUNT_REPEATED bit masks to repeated fields that were previously missing 2. Resolve segfault when serializing proto into vector of uint8_t 3. Add a local byte size variable for EventMetric data as we cannot call size() of ProtoOutputStream before we finish writing. 4. Replace hardcoded conversion of second to nano second with NS_PER_SEC"