feat: Add more output in e2e test for debug purpose and fix test cases

[gaocegege]

Signed-off-by: Ce Gao gaoce@caicloud.io

What this PR does / why we need it:

/assign @johnugeorge

2019/09/19 10:34:09 Waiting for Experiment hyperopt-random-example to finish.
2019/09/19 10:34:09 Experiment hyperopt-random-example's trials: 2 trials, 0 pending trials,
2 running trials, 0 killed trials, 0 succeeded trials, 0 failed trials.
2019/09/19 10:34:09 Optimal Trial for Experiment hyperopt-random-example: {[] {[]}}
2019/09/19 10:34:09 Experiment hyperopt-random-example's conditions: [{Created True ExperimentCreated Experiment is created 2019-09-19 10:33:49 +0800 CST 2019-09-19 10:33:49 +0800 CST} {Running True ExperimentRunning Experiment is running 2019-09-19 10:33:51 +0800 CST 2019-09-19 10:33:51 +0800 CST}]

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Release note:

---

This change is 

[johnugeorge]

/lgtm

[johnugeorge]

/approve

[k8s-ci-robot]

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