Fix error when parsing SSH url without port.

[vinokurig]

What does this PR do?

When we parse SSH urls, we extract the server url from it by extracting the string after ssh://git@ to :<port>/.... If the provider url does not contain port, e.g. ssh://git@<hostname>/user/repo an error occurs.

Rework the extract server functions to respect urls without port.

Screenshot/screencast of this PR

What issues does this PR fix or reference?

https://issues.redhat.com/browse/CRW-8301

How to test this PR?

1. Add an SSH key to the user namespace.
2. Start a workspace from an SSH url in format ssh://git@<hostname>/user/repo e.g ssh://git@bitbucket-server/user/repo.git.

See: the url is resolved and workspace starts.

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Release Notes

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[artaleks9]

/retest

[vinokurig]

/retest

[artaleks9]

Verified on Eclipse Che with quay.io/eclipse/che-server:pr-810 - the functionality works properly

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: artaleks9, tolusha, vinokurig

The full list of commands accepted by this bot can be found here.

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