Change the messaging to avoid confusion

[dharmit]

What type of PR is this?
/kind code-refactoring

What does does this PR do / why we need it:
Operators listed by odo catalog list services could or could not be
installed from Operator Hub.

Which issue(s) this PR fixes:

Fixes #2794

How to test changes / Special notes to the reviewer:
Enable the experimental mode and check output of odo catalog list services. Make sure at least one operator is installed in the cluster.

[mik-dass]

/lgtm

[kadel]

/approve
/retest

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kadel

The full list of commands accepted by this bot can be found here.

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• OWNERS [kadel]

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[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[cdrage]

/lgtm

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[codecov]

Codecov Report

Merging #2802 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master    #2802   +/-   ##
=======================================
  Coverage   43.39%   43.39%           
=======================================
  Files          91       91           
  Lines        8312     8312           
=======================================
  Hits         3607     3607           
  Misses       4352     4352           
  Partials      353      353

Impacted Files	Coverage Δ
pkg/odo/cli/catalog/util/util.go	40.47% <0%> (ø)	⬆️

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