Add metric to count when ref size is larger that maxApiPayloadSize

maxApiPayloadSize param define the size of the payload to send via
apply object. If ref size is greater than maxApiPayloadSize apply
object is be skipped and ref is transfer via git fetch.

Counting how many time apply object is skipped is helpful to tune
the configuration.

Change-Id: I40ce0f9d8aaf37ca95527bc5f6528fabea42e362
2 files changed