Update training controller image to latest

[johnugeorge]

Training controller image is updated to the latest commit- e1434f6 for v1.5.0 rc0 release

[coveralls]

Pull Request Test Coverage Report for Build 2577761112

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 11 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.2%) to 40.079%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/controller.v1/mpi/mpijob_controller.go	2	78.03%
pkg/controller.v1/pytorch/pytorchjob_controller.go	9	61.81%

Totals
Change from base Build 2577674817:	0.2%
Covered Lines:	2337
Relevant Lines:	5831

---

💛 - Coveralls

[terrytangyuan]

/lgtm

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge, terrytangyuan

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

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [johnugeorge,terrytangyuan]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment