chore(bench): allow configuring count

Signed-off-by: Tomasz Janiszewski <tomek@redhat.com>

Makefile

@@ -6,6 +6,7 @@ TESTFLAGS=-race -p 4
 BASE_DIR=$(CURDIR)
 BENCHTIME ?= 1x
 BENCHTIMEOUT ?= 20m
+BENCHCOUNT ?= 1
 
 ifeq (,$(findstring podman,$(shell docker --version 2>/dev/null)))
 # Podman DTRT by running processes unprivileged in containers,
@@ -512,7 +513,7 @@ go-postgres-unit-tests: build-prep test-prep
 go-postgres-bench-tests: build-prep test-prep
 	@# The -p 1 passed to go test is required to ensure that tests of different packages are not run in parallel, so as to avoid conflicts when interacting with the DB.
 	set -o pipefail ; \
-	CGO_ENABLED=1 GODEBUG=cgocheck=2 MUTEX_WATCHDOG_TIMEOUT_SECS=30 ROX_POSTGRES_DATASTORE=true GOTAGS=$(GOTAGS),test,sql_integration scripts/go-test.sh -p 1 -run=nonthing -bench=. -benchtime=$(BENCHTIME) -benchmem -timeout $(BENCHTIMEOUT) -v \
+	CGO_ENABLED=1 GODEBUG=cgocheck=2 MUTEX_WATCHDOG_TIMEOUT_SECS=30 ROX_POSTGRES_DATASTORE=true GOTAGS=$(GOTAGS),test,sql_integration scripts/go-test.sh -p 1 -run=nonthing -bench=. -benchtime=$(BENCHTIME) -benchmem -timeout $(BENCHTIMEOUT) -count $(BENCHCOUNT) -v \
   $(shell git grep -rl "testing.B" central pkg migrator tools | sed -e 's@^@./@g' | xargs -n 1 dirname | sort | uniq | xargs go list -tags sql_integration | grep -v '^github.com/stackrox/rox/tests$$' | grep -Ev $(UNIT_TEST_IGNORE)) \
 		| tee $(GO_TEST_OUTPUT_PATH)