Change the way of dapr cli reinstalling

[zzxwill]

Ask your question here

When dapr is already installed, it will be reinstalled.

✗ curl -fsSL https://raw.githubusercontent.com/dapr/cli/master/install/install.sh | /bin/bash

Your system is darwin_amd64

Dapr CLI is detected:
CLI version: 0.11.0
Runtime version: n/a
Reinstalling Dapr CLI - /usr/local/bin/dapr...

Getting the latest Dapr CLI...
Installing v0.11.0 Dapr CLI...
Downloading https://github.com/dapr/cli/releases/download/v0.11.0/dapr_darwin_amd64.tar.gz ...
dapr installed into /usr/local/bin successfully.
CLI version: 0.11.0
Runtime version: n/a

To get started with Dapr, please visit https://docs.dapr.io/getting-started/

I wonder whether it would be better if:

• the local dapr is latest, exit the installation.

✗ curl -fsSL https://raw.githubusercontent.com/dapr/cli/master/install/install.sh | /bin/bash

Your system is darwin_amd64

Dapr CLI is detected:
CLI version: 0.11.0
Runtime version: n/a

The latest Dapr Cli is installed, exiting...           # New line

• the local dapr is out of date, ask users whether to reinstall

✗ curl -fsSL https://raw.githubusercontent.com/dapr/cli/master/install/install.sh | /bin/bash

Your system is darwin_amd64

Dapr CLI is detected:
CLI version: 0.5.0
Runtime version: n/a

Are you sure you wanna install the latest version 0.11.0: Yes/No  # New line

Or you guys just want to keep the installation process as simple as possible? Thanks.

[mukundansundar]

Keeping the installation process as simple as possible makes sense. At the same time not downloading the cli if already latest version is available and also the confrim prompt are nice additions.

cc @yaron2