feat: add default appProtocol on oc receiver

Signed-off-by: Husni Alhamdani <[email protected]>

.chloggen/main.yaml

@@ -8,7 +8,7 @@ component: operator
 note: add missing appProtocol in opencensus receiver
 
 # One or more tracking issues related to the change
-issues: []
+issues: [2487]
 
 # (Optional) One or more lines of additional information to render under the primary note.
 # These lines will be padded with 2 spaces and then inserted directly into the document.