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

[bwplotka]

We had to skip test even:

	{
			name: "Use -u=patch to upgrade thanos package",
			do: func(t *testing.T, g *goEnv, p *testProject) {
				if !goVersion.LessThan(version.Go116) {
					// TODO(bwplotka): Fix. It's not critical feature though to block release.
					t.Skip("From Go 1.16 behavior changed: get: can't query version \"patch\" of module github.com/thanos-io/thanos/cmd/thanos: no existing version is required")
				}
				fmt.Println(g.ExecOutput(t, p.root, bingoPath, "get", "--upatch", "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/thanos@v0.21.1"},
			},
			expectBinaries: []string{"thanos-v0.21.1"},
		},

Next steps:

• Potentially remove u and upatch options with something home-made that tries to get literally latest commit/tag of provided repo.

[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/thanos@v0.21.1"},
			},
			expectBinaries: []string{"thanos-v0.21.1"},
		},