Use app naming rules in error and progress messages

[carolinebriaud]

Signed-off-by: Caroline Briaud caroline.briaud@docker.com

- What I did
Use App naming rules for error and progress messages

- How to verify it
Go through error messages and progress messages

- A picture of a cute animal (not mandatory but encouraged)

[silvin-lubecki]

=== Failed
=== FAIL: e2e TestPushPullInstall (16.76s)
    pushpull_test.go:185: assertion failed: 
        Command:  docker app run unknown
        ExitCode: 1
        Error:    exit status 1
        Stdout:   Pulling from registry...
        Stderr:   Unable to find application image "unknown:latest" locally
        Unable to find App "unknown": failed to resolve bundle manifest "docker.io/library/unknown:latest": pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed
        Failures:
        Expected stderr to contain "Unable to find application image \"unknown:latest\" locally\nUnable to find application \"unknown\": failed to resolve bundle manifest \"docker.io/library/unknown:latest\": pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed"

[codecov]

Codecov Report

Merging #713 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #713   +/-   ##
=======================================
  Coverage   71.58%   71.58%           
=======================================
  Files          59       59           
  Lines        3051     3051           
=======================================
  Hits         2184     2184           
  Misses        585      585           
  Partials      282      282

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[silvin-lubecki]

LGTM