Re-introduce BBN TAKServer Certificate Support

[fieldmapper]

Request: Support for BBN TAKServer generated SSL certificates on FTS. Ensuring smooth migration of end-users using the BBN TAKServer platform to FTS by using the same Client and TrustStore certificates.

[brothercorvo]

will be included in 1.9

[naman108]

this will probably require an option to configure a custom certificate authority

[brothercorvo]

@naman108 is this one still in progress?