[WIP] Generate codecov reports for PRs

[kanchwala-yusuf]

1. Changes to .codecov.yml to enable code coverage reports
2. Changes to generate-coverage.sh for fixing errors

Fixes #1557

What kind of PR is this?
/kind bug

What does does this PR do / why we need it:
This PR enables code coverage reports in PRs

Which issue(s) this PR fixes:

Fixes #1557

How to test changes / Special notes to the reviewer:
Codecoverage reports should be seen with PRs.

[kanchwala-yusuf]

/test v4.3-integration-e2e-benchmark

[kanchwala-yusuf]

/test v4.3-integration-e2e-benchmark

[girishramnani]

could you please remove this commented code?

[girishramnani]

default behavior updates the coverage info but when updating, the creation date of the comment will stay the same. There will be an edited link with a drop-down where you can check the times updated.
there is a new setting which deletes old and post new one. Would considering that be better @kanchwala-yusuf ?
cc @kadel

[kanchwala-yusuf]

@girishramnani, Forgot to add the WIP in the PR title. The changes in the PR are tentative and subject to change.

[kanchwala-yusuf]

This PR requires codecov to be enabled at the openshift org level. @amitkrout is following the due procedure for the same.

Once, that is done, this PR can progress ahead.

cc: @kadel , @amitkrout

[amitkrout]

This PR requires codecov to be enabled at the openshift org level. @amitkrout is following the due procedure for the same. Once, that is done, this PR can progress ahead.

Created a jira task of priority Urgent in projects/DPP and shared it in fourum-dp-platform for a quick action

[amitkrout]

Created a jira task of priority Urgent in projects/DPP and shared it in fourum-dp-platform for a quick action

@kanchwala-yusuf This is the last update i got on the jira

Right after I posted this, I found an org-level setting where I had to explicitly grant 
CodeCov access to openshift/odo, so I enabled it. I think you should be good to go.

Seems the access has been granted. Can you please rebase the pr and check the expected output.

[codecov]

Codecov Report

Merging #2418 into master will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2418      +/-   ##
==========================================
+ Coverage   42.59%   42.65%   +0.05%     
==========================================
  Files          73       73              
  Lines        7038     7062      +24     
==========================================
+ Hits         2998     3012      +14     
- Misses       3757     3763       +6     
- Partials      283      287       +4

Impacted Files	Coverage Δ
pkg/occlient/occlient.go	49.48% <0%> (-0.12%)	⬇️
pkg/occlient/volumes.go	73.83% <0%> (+1.2%)	⬆️

---

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[kanchwala-yusuf]

The code coverage is being generated as it has been enabled at the openshift org level. So, I guess we do not need this PR.

[kanchwala-yusuf]

So, closing this PR.