Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_4/rev/a296e937e4ce
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Bug 1003023 - [Sora] OMA CP - Parse provisioning document correctly

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https://hg.mozilla.org/integration/gaia-1_4/rev/dc5e860a63e1
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #18897 from nsarkar/bug998488_v1.4

Bug 998488 - STK PLAY_TONE feature broken r=:etienne

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https://hg.mozilla.org/integration/gaia-1_4/rev/384fa4bda1ad
Author: Nivedita Sarkar <nsarkar@codeaurora.org>
Desc: Bug 998488 - STK PLAY_TONE feature broken r=:etienne

- Access _iccManager from icc instead of iccManager

- Add test case for PLAY_TONE
Bumping manifests a=b2g-bump