enable by default share ssl context thrift flag
enable by default share ssl context thrift flag

Summary:
The feature has been enabled in production on two WDBs: smc proxy and fbflow.
We are now ready to enable it by default in all services that use ServiceFramework.

For more context about this work, please see T61860233.

Reviewed By: andriigrynenko

Differential Revision: D22567008

fbshipit-source-id: 605a1f875a2c3c2a6a40d9b0783f2a5cb4fc59e3

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