cmd: fix some golint warnings

These:

internal/container/mesos/handler.go:173:25: error strings should not be capitalized or end with punctuation or a newline (golint)
		return "", fmt.Errorf("could not find path for resource %q for container %q\n", resource, h.name)
		                      ^

internal/storage/bigquery/client/client.go:147:9: `if` block ends with a `return` statement, so drop this `else` and outdent its block (golint)
	} else {
	       ^

Signed-off-by: Kir Kolyshkin <[email protected]>

Author: kolyshkin

cmd/internal/container/mesos/handler.go

@@ -170,7 +170,7 @@ func (h *mesosContainerHandler) GetStats() (*info.ContainerStats, error) {
 func (h *mesosContainerHandler) GetCgroupPath(resource string) (string, error) {
 	path, ok := h.cgroupPaths[resource]
 	if !ok {
-		return "", fmt.Errorf("could not find path for resource %q for container %q\n", resource, h.name)
+		return "", fmt.Errorf("could not find path for resource %q for container %q", resource, h.name)
 	}
 	return path, nil
 }

cmd/internal/storage/bigquery/client/client.go

@@ -144,9 +144,8 @@ func (c *Client) PrintDatasets() error {
 	if err != nil {
 		fmt.Printf("Failed to get list of datasets\n")
 		return err
-	} else {
-		fmt.Printf("Successfully retrieved datasets. Retrieved: %d\n", len(datasetList.Datasets))
 	}
+	fmt.Printf("Successfully retrieved datasets. Retrieved: %d\n", len(datasetList.Datasets))
 
 	for _, d := range datasetList.Datasets {
 		fmt.Printf("%s %s\n", d.Id, d.FriendlyName)