Tolerate missing ps

[cbridgha]

Some VM environments may have a minimized or missing "PS" command. These changes account for this.

[LibbyBot]

Code analysis and actions

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• 1 product code files were changed.
• Please describe in a separate comment how you tested your changes.

[cbridgha]

#build

[LibbyBot]

Your personal build request is at https://wasrtc.hursley.ibm.com:9443/jazz/resource/itemOid/com.ibm.team.build.BuildResult/_d7eioEqFEemPWpVfp3aH-g

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[LibbyBot]

Your Open Liberty build results are ready for viewing.

• Unit test results are at http://public.dhe.ibm.com/ibmdl/export/pub/software/openliberty/runtime/personal/_d7eioEqFEemPWpVfp3aH-g/junit/index.html.
• Gradle log and image zip are at http://public.dhe.ibm.com/ibmdl/export/pub/software/openliberty/runtime/personal/_d7eioEqFEemPWpVfp3aH-g.

[cbridgha]

#build

[LibbyBot]

Your personal build request is at https://wasrtc.hursley.ibm.com:9443/jazz/resource/itemOid/com.ibm.team.build.BuildResult/_KlZEAEsPEemPWpVfp3aH-g

Target locations of links might be accessible only to IBM employees.

[LibbyBot]

Your Open Liberty build results are ready for viewing.

• Unit test results are at http://public.dhe.ibm.com/ibmdl/export/pub/software/openliberty/runtime/personal/_KlZEAEsPEemPWpVfp3aH-g/junit/index.html.
• Gradle log and image zip are at http://public.dhe.ibm.com/ibmdl/export/pub/software/openliberty/runtime/personal/_KlZEAEsPEemPWpVfp3aH-g.

[cbridgha]

Confirmed the minimal docker package doesn't throw exception anymore.. merging

[LibbyBot]

The build cbridgha-6953-20190320-1401
https://wasrtc.hursley.ibm.com:9443/jazz/resource/itemOid/com.ibm.team.build.BuildResult/_KlZEAEsPEemPWpVfp3aH-g
completed successfully!