CB-6160 - firefoxos push to fix plugman

[Piotr Zalewa]

It looks like the fix [1] is in master [2]. There is some discussion 
about this fix breaking Android, but changes are in firefoxos.js file, 
so I don't see how it could happen [3]

[1] https://github.com/apache/cordova-plugman/pull/61/files
[2] 
https://github.com/apache/cordova-plugman/blob/master/src/platforms/firefoxos.js#L4
[3] https://issues.apache.org/jira/browse/CB-6160
Can we please ship it?

Thanks
Piotr
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Piotr Zalewa
Mozilla