Improved connection type logging

[akshaychhajed]

A Pull Request should be associated with an Issue.

We wish to have discussions in Issues. A single issue may be targeted by multiple PRs.
If you're offering a new feature or fixing anything, we'd like to know beforehand in Issues,
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Related issue: #461

Further notes in https://github.com/github/gh-ost/blob/master/.github/CONTRIBUTING.md
Thank you! We are open to PRs, but please understand if for technical reasons we are unable to accept each and any PR

Description

This PR adds connection type to logs. It helps distinguish connection type (inspector, streamer and applier)
Fixes #461

In case this PR introduced Go code changes:

• contributed code is using same conventions as original code
• script/cibuild returns with no formatting errors, build errors or unit test errors.

[timvaillancourt]

@akshaychhajed thanks for your contribution and sorry for the delay

Could you resolve the merge conflicts with this PR above? I can test and merge this PR once the changes are up-to-date

[akshaychhajed]

@timvaillancourt looks like I am little late for this. Let me know if I can help.

[timvaillancourt]

LGTM

[timvaillancourt]

@timvaillancourt looks like I am little late for this. Let me know if I can help.

@akshaychhajed I've fixed the merge conflicts and this change LGTM 👍. Thanks!