cmd/gomote: add -count flag to create
cmd/gomote: add -count flag to create

For golang/go#53956.

Change-Id: I98feeeed0e17260e9795361c8db5177c6191bda6
Reviewed-on: https://go-review.googlesource.com/c/build/+/418299
Reviewed-by: Carlos Amedee <ab5e2bca84933118bbc9d48ffaccce3bac4eeb64@golang.org>
Auto-Submit: Michael Knyszek <4473450dc5c88f06e1fb787f303d7805ec2aee65@google.com>
Run-TryBot: Michael Knyszek <4473450dc5c88f06e1fb787f303d7805ec2aee65@google.com>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

golang/build,golang/build,golang/build,golang/build