Clean up naming supervisord-image -> init-image

[kadel]

This image contains more than supervisord, this updates naming and paths to be more generic to reflect current use.

• clean up some unnecessary lines from Dockerfile
• use /opt/odo-init/ instead of /opt/supervisord inside the initContainer image
• use /opt/odo instead of /var/lib/supervisord insde the builder container

[mohammedzee1000]

Looking good
/approve

[openshift-ci-robot]

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[amitkrout]

Ping @girishramnani @mohammedzee1000 @cdrage

[amitkrout]

Ping @girishramnani @mohammedzee1000 @cdrage

@kadel Make sure that travis CI should pass

[kadel]

@kadel Make sure that travis CI should pass

It won't pass as it requires changes in redhat-developer/odo#2027. And tests for redhat-developer/odo#2027 won't pass without this :-D Chicken and Egg problem.

The less evil is to merge this first, as it won't break any existing code on odo side.

[cdrage]

I don't see any issue with this. Let's coordinate a time to merge all three in at the same time.

[kadel]

/lgtm

[openshift-ci-robot]

@kadel: you cannot LGTM your own PR.

In response to this:

/lgtm

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