-upatch and -u options does not work as expected; bring them back

[bwplotka]

-upatch and -u options does not work as expected; bring them back

[bwplotka]

Removing -u test too for now as it's misleading most of the time.

{
			name: "Use -u to upgrade thanos package",
			do: func(t *testing.T, g *goEnv, p *testProject) {
				fmt.Println(g.ExecOutput(t, p.root, bingoPath, "get", "-u", "thanos"))
			},
			expectRows: []row{
				// TODO(bwplotka) This will be painful to maintain, but well... improve it
				{name: "thanos", binName: "thanos-v0.21.1", pkgVersion: "github.com/thanos-io/thanos/cmd/[email protected]"},
			},
			expectBinaries: []string{"thanos-v0.21.1"},
		},