Issue-114: (Docs) Added FAQ for updating constraints via hzn cli

[Abhijay007]

Signed-off-by: Abhijay Jain [email protected]

Description

Added FAQ for updating constraint of an existing deployment policy via hzn cli

Fixes #114

Type of change

code and docs

Please delete options that are not relevant.

• This change requires a documentation update

How Has This Been Tested?

tested locally by running the server

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have checked my code and corrected any misspellings
• I have tagged the reviewers in a comment below incase my pull request is ready for a review
• I have signed the commit message to agree to Developer Certificate of Origin (DCO) (to certify that you wrote or otherwise have the right to submit your contribution to the project.) by adding "--signoff" to my git commit command.

[joewxboy]

I didn't know you needed to escape the target of underscore blank. We may need to document this elsewhere when we discuss external links.

[johnwalicki]

I like the linting updates in this commit.

This additional FAQ about deployment policies seems misplaced however. That's a low level detail that might be better off in the
"Deployment Policy Use Cases" page at
https://github.com/open-horizon/open-horizon.github.io/blob/master/docs/using_edge_services/policy_user_cases.md
which lands here:
https://open-horizon.github.io/docs/using_edge_services/policy_user_cases.html

[johnwalicki]

Opened a new issue to move this FAQ entry. #226

[johnwalicki]

Was the escape on the _underscore a Linter suggestion?
{:target="\_blank"}{: .externalLink}
Technically both are correct and both work. Is there a specific reason we should switch the syntax?

Honestly. I just committed an enormous PR #220 to sync docs and brought these {:target="\_blank"}{: .externalLink} into tons of IEAM pages. Do we need to redo that?

[johnwalicki]

If both are correct, for stylistic consistency, I'd prefer that it be reverted to the original syntax.