Decorator for exception handling in Checker

[Raushan Raj]

1. Add exception handling to all the methods of Container Checker
2. Add exception handling so that flow will not be disrupted because of one issue.
3. Global exception is not recommended, still over the remove it, add comment for the same.

[Tanmoy Sarkar]

@sttor I like to start contributing in KubeLight with this enhancement issue. Can you assign me this ?

[Raushan Raj]

Hi, @Tanmoy741127

@pwned-17 has already worked on it.

[Tanmoy Sarkar]

Hi, @Tanmoy741127

@pwned-17 has already worked on it.

Oh fine. Will find another one.