Add autoconnect property for network connections

[jcronenberg]

Problem

Missing autoconnect property for network connections.

Solution

Add autoconnect property.

Testing

• Extended unit test
• Tested manually

sudo agama auth login && AGAMA_TOKEN=`sudo agama auth show`
curl http://localhost/api/network/connections \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer $AGAMA_TOKEN" \
    -d '{ "id": "testcon", "method4": "auto", "method6": "auto", "ignoreAutoDns": false, "status": "down", "autoconnect": false }'
curl -X POST http://localhost/api/network/system/apply \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer $AGAMA_TOKEN"
nmcli con show testcon
# See autoconnect set to "no".

[coveralls]

Pull Request Test Coverage Report for Build 11703899752

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 5 of 5 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.006%) to 71.492%

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Totals
Change from base Build 11702749302:	0.006%
Covered Lines:	16895
Relevant Lines:	23632

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💛 - Coveralls