Unable to execute 'jx boot' from outside a boot repo

[hferentschik]

Summary

This is an side-effect of the changes merged for #6653

Steps to reproduce the behavior

From an empty directory execute jx boot:

jx --verbose boot
Creating boot config with defaults, as not in an existing boot directory with a git repository.
hello <nil>
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x199 pc=0x305bdd0]

goroutine 1 [running]:
github.com/jenkins-x/jx/pkg/cmd/opts.(*CommonOptions).ConfigureCommonOptions(0xc000458000, 0x0, 0x0, 0x0)
	/Users/hardy/work/go/src/github.com/jenkins-x/jx/pkg/cmd/opts/team_settings.go:169 +0x90
github.com/jenkins-x/jx/pkg/cmd/boot.(*BootOptions).Run(0xc00069aa00, 0x0, 0x0)
	/Users/hardy/work/go/src/github.com/jenkins-x/jx/pkg/cmd/boot/boot.go:158 +0x1bb
github.com/jenkins-x/jx/pkg/cmd/boot.NewCmdBoot.func1(0xc00069d900, 0xc0004f7940, 0x0, 0x1)
	/Users/hardy/work/go/src/github.com/jenkins-x/jx/pkg/cmd/boot/boot.go:92 +0x6f
github.com/spf13/cobra.(*Command).execute(0xc00069d900, 0xc0004f7930, 0x1, 0x1, 0xc00069d900, 0xc0004f7930)
	/Users/hardy/work/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:830 +0x2ae
github.com/spf13/cobra.(*Command).ExecuteC(0xc0001c0000, 0xc0002c5c80, 0x66c5e20, 0xc0000b8000)
	/Users/hardy/work/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:914 +0x2fc
github.com/spf13/cobra.(*Command).Execute(...)
	/Users/hardy/work/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:864
github.com/jenkins-x/jx/cmd/jx/app.Run(0x0, 0x0, 0x0, 0xc000a37f88, 0xc00005c178)
	/Users/hardy/work/go/src/github.com/jenkins-x/jx/cmd/jx/app/jx.go:19 +0x185
main.main()
	/Users/hardy/work/go/src/github.com/jenkins-x/jx/cmd/jx/jx.go:11 +0x32