tedge reconnect command

[cmosd]

Proposed changes

Added a new command to tedge - tedge reconnect {cloud}. This command
simply combines tedge disconnect and tedge connect.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

• Add new tedge reconnect command #1638

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s)
• I ran cargo fmt as mentioned in CODING_GUIDELINES
• I used cargo clippy as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[reubenmiller]

How to test

*** Test Cases ***

Reconnect when not already connected
    ${DEVICE_SN}           Setup
    Device Should Exist    ${DEVICE_SN}
    Execute Command        tedge discconnect c8y
    Execute Command        tedge connect c8y --test    exp_exit_code=1
    Execute Command        tedge reconnect c8y
    Execute Command        tedge reconnect c8y        # Try reconnect after already connected
    Execute Command        tedge connect c8y --test


Reconnect unknown mapper
    Setup              skip_bootstrap=True
    Execute Command    tedge reconnect test    exp_exit_code=2


Reconnect unconfigured azure mapper
    Setup              skip_bootstrap=True
    Execute Command    tedge reconnect az    exp_exit_code=1

[reubenmiller]

LGTM but I will let a rust person approve it

[PradeepKiruvale]

LGTM