bug 1014287 - stop gaia_bumper. r=catlee

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extra : rebase_source : 9e2f7f7a94aaae079baf4a72237e4d76e4c785ce
bug 987980 - enable b2g bumper for 2.0. r=catlee

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extra : rebase_source : 0f9595233d22a54bbed36ca1a3a77df6650dd6ca
Bug 8437096: pin collectd versions to ubuntu based on release; r=dustin
Merge default -> production

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branch : production