Increase the number of test runs to 20 to capture rarer flake scenarios (#2407)

Author: kislaykishore

.github/workflows/flake-detector.yml

@@ -32,10 +32,10 @@ jobs:
         run: go mod download
 
       - name: Test all except caching parallely
-        run: CGO_ENABLED=0 go test  -count 5 -skip `cat flaky_tests.lst | go run tools/scripts/skip_tests/main.go` `go list ./... | grep -v internal/cache/...`
+        run: CGO_ENABLED=0 go test  -count 20 -skip `cat flaky_tests.lst | go run tools/scripts/skip_tests/main.go` `go list ./... | grep -v internal/cache/...`
 
       - name: Test caching
-        run: CGO_ENABLED=0 go test -p 1 -count 5 -v -skip `cat flaky_tests.lst | go run tools/scripts/skip_tests/main.go` ./internal/cache/...
+        run: CGO_ENABLED=0 go test -p 1 -count 20 -v -skip `cat flaky_tests.lst | go run tools/scripts/skip_tests/main.go` ./internal/cache/...
 
       - name: Cache RaceDetector Test
-        run: CGO_ENABLED=0 go test -p 1 -count 5 ./internal/cache/...
+        run: CGO_ENABLED=0 go test -p 1 -count 20 ./internal/cache/...