seperate otel from otel-grpc due to condition causing mutex corruption when grpc is enabled

[ToshY]

Description

Seperating otel image into separate grpc image due to following condition when GRPC is enabled but not used

[mutex.cc : 2445] RAW: Check w->waitp->cv_word == nullptr failed: Mutex::Fer with pending CondVar queueing
WARNING: [pool www] child 17 exited on signal 6 (SIGABRT - core dumped) after 41415.816755 seconds from start

Checklist

• My code adheres to the style guidelines of this project
• I have conducted a self-review of my code
• I have added comments to my code, especially in areas that may be difficult to understand

[ToshY]

lgtm; build images after merge