[PF-1854] Alert user when there is no terra sshkey as they add a git repo reference

[yuhuyoyo]

example user flow:

yuhuyoyo-macbookpro3% terra resource add-ref git-repo --name=cli --repo-url=git@github.com:DataBiosphere/terra-cli.git           
Successfully added referenced git repo.
Name:         cli
Description:  
Type:         GIT_REPO
Stewardship:  REFERENCED
Cloning:      COPY_REFERENCE
Git repo Url: git@github.com:DataBiosphere/terra-cli.git
You do not have a Terra ssh key, cloning the git repo in the GCP notebook will fail. Please run `terra user ssh-key generate` and store the output (public key) in your GitHub account https://github.com/settings/keys.
yuhuyoyo-macbookpro3% terra user ssh-key generate
Generating a new Terra SSH key will replace the old Terra SSH key if it exists. You must associate the new SSH public key with your GitHub account using https://github.com/settings/keys. Are you sure you want to proceed (y/N)? y
ssh-rsa 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 yuhuyoyo@google.com
yuhuyoyo-macbookpro3% terra resource add-ref git-repo --name=terra_ui --repo-url=git@github.com:verily-src/terra-ui.git
Successfully added referenced git repo.
Name:         terra_ui
Description:  
Type:         GIT_REPO
Stewardship:  REFERENCED
Cloning:      COPY_REFERENCE
Git repo Url: git@github.com:verily-src/terra-ui.git

[melissachang]

Awesome thanks!

[melissachang]

Why did this change? I followed https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent#adding-your-ssh-key-to-the-ssh-agent when I set up my key

For me, it was helpful that cli printed https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent#adding-your-ssh-key-to-the-ssh-agent

[yuhuyoyo]

i thought it's more straightforward to just go to https://github.com/settings/keys to add your key? step 1 and 2 should be automatically covered by the notebook startup script.

[melissachang]

Oh, is adding a key to https://github.com/settings/keys the same as ssh-add -K ~/.ssh/id_ed25519 ? If so, SG, thanks

[melissachang]

I thought instructions were at https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent#adding-your-ssh-key-to-the-ssh-agent ?

[melissachang]

// Generate ssh key to avoid prompt about ssh key