Fix issues identified during testing

[nagdahimanshu]

What was the problem?

This PR resolves #30

How was it solved?

• Errors are properly formatted (replace %w with %v)
• Application should start with relative path when running with docker
• Run fault detector from source code with custom config file works without any issue
• Update config default host to 0.0.0.0 to be accessible when running with docker
• Resolve status based on diverged flag from fault detector
  • Refactor server implementation to pass fault detector instance
  • Add implementation to validates if version specific handlers are registered before starting the server
• Update addressRegex to support uppercase characters
• Update Makefile
  • Updated docker run command to run container in background
  • Add docker stop command

How was it tested?

Local

[hrmhatef]

LGTM, just one small suggestion.

[hrmhatef]

Also I have another suggestion, we can remove the routes pkg an move the ping path to the server.go in the NewHTTPServer func, WDYT?

[sameersubudhi]

LGTM 👍