Update Go version and base image on Openshift CI

[prietyc123]

What type of PR is this?

> Uncomment only one ` /kind` line, and delete the rest.
> For example, `> /kind bug` would simply become: `/kind bug`

> /kind api-change
> /kind bug
> /kind cleanup
> /kind deprecation
> /kind design
> /kind documentation
> /kind failing-test
> /kind feature
> /kind flake
> /kind code-refactoring

What does does this PR do / why we need it:

Updates the base image of go on openshift CI

Which issue(s) this PR fixes:

Fixes NA

How to test changes / Special notes to the reviewer:
It should pull go-1.13+ image on Openshift CI

[girishramnani]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: girishramnani

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• OWNERS [girishramnani]

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[prietyc123]

Team I have updated the go version to 1.13 in Openshift CI to be in sync with our travis build env. So in case you are using any version less than this I would suggest let's migrate to 1.13 to be in sync actual dev env with CI setup.

[amitkrout]

/lgtm

[codecov]

Codecov Report

Merging #2830 into master will increase coverage by 0.11%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2830      +/-   ##
==========================================
+ Coverage   43.53%   43.64%   +0.11%     
==========================================
  Files          94       94              
  Lines        8743     8743              
==========================================
+ Hits         3806     3816      +10     
+ Misses       4569     4563       -6     
+ Partials      368      364       -4     

Impacted Files	Coverage Δ
pkg/watch/watch.go	69.41% <0.00%> (+5.88%)	⬆️

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