Use golang 1.11 from epel

[jarifibrahim]

Use epel repository to install golang package which was deprecated in CentOS-7
see: https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7.1810#head-e467ac744557df926ed56dc0106f43961e5ffc38

See also openshiftio/openshift.io#4618 and fabric8-services/fabric8-cluster#47

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@874db20). Click here to learn what that means.
The diff coverage is 25%.

@@            Coverage Diff            @@
##             master    #2378   +/-   ##
=========================================
  Coverage          ?   70.11%           
=========================================
  Files             ?      174           
  Lines             ?    17121           
  Branches          ?        0           
=========================================
  Hits              ?    12005           
  Misses            ?     3951           
  Partials          ?     1165

Impacted Files	Coverage Δ
auth/authz.go	0% <0%> (ø)
controller/deployments.go	55.84% <0%> (ø)
login/service.go	10.66% <0%> (ø)
controller/work_item_link.go	81.74% <100%> (ø)

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[michaelkleinhenz]

LGTM

[kwk]

I highly object against this change. I explicitly want to be able to use Go from the website in order to test out new features in builds like the coverage for example. If you find that CentOS has ditched Golang as it appears, then please fix that problem and don't just remove the ability to use Go from the website.

[jarifibrahim]

I highly object against this change. I explicitly want to be able to use Go from the website in order to test out new features in builds like the coverage for example.

We can still test things via a PR, can't we? Even if we keep the flag, you'd still have to send a new PR if you want to test something :)

If you find that CentOS has ditched Golang as it appears, then please fix that problem and don't just remove the ability to use Go from the website.

Using golang from epel is exactly what we want. I wasn't part of the discussion where it was decided to use golang from epel and not website but it looks like most of our services have already migrated openshiftio/openshift.io#4618

[kwk]

By testing I mean: Permanently use a feature (not only in one PR).

I'm not suggesting to not use Go from epel. I just want you to not remove the feature to be able to use Go from the website.

[jarifibrahim]

@kwk okay. That makes sense. I'll undo the removal of from-website flag.