[[--DO-NOT-MERGE--]] Mock ups for fake, experimental alpha APIs.#365

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jdef wants to merge 7 commits intocontainer-storage-interface:masterfrom

jdef:alpha_support_mockup1

Commits on Apr 4, 2019

spec: added alpha_xxx options
James DeFelice
committed
spec: remove superfluous newlines
James DeFelice
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spec: AlphaFeature capability for all services.
James DeFelice
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spec: experimental RPC: tape rotation.
James DeFelice
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spec: experimental enum value: QUARKS.
James DeFelice
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spec: experimental field: Volume.lineage.
James DeFelice
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spec: experimental service: ObjectStore.
James DeFelice
committed