…ameter is set to sig, FroNTier requests that the server sends digital signatures on every response.

Add frontier security option as a string data member in ConnectionPool, and define appropriate setter. The frontier security option is turned on for all sessions using the same ConnectionPool for configuring the server access via CORAL.
Add FroNTier security option in DBParameters PSet of CondDB setup.
Put a default value for the authentication path in ConnectionPool.
When setting connection parameters from a ParameterSet in ConnectionPool, if a parameter is not defined, keep the values already set in the data members (i.e. default if no other setters called, or the ones currently available).
Removed duplicated code for setting table time to live parameters of Condition schema in ConnectionPool.
Removed the unused dbFormat parameter in CondDB_cfi.py as we only support CondDBv2, and dropped unused CondDBboost_cfi.
New unit test for ConnectionPool.
Add a warning about unsupported connection strings.

Conflicts:
	CondCore/CondDB/src/ConnectionPool.cc
	CondCore/CondDB/src/DbConnectionString.cc

…DBSetup for CondDBv1.

* Added RelationalAuthenticationService and XMLAuthenticationService plugins in CondCore/CondDB
* Use the newly defined auth namespace in CondDB
* Add missing dependencies in plugins BuildFile of CondDB
* Fix for one DBCommon left over
* Fix for non-required dependencies

…n_cfi.py and CondCore/DBCommon/python/CondDBSetup_cfi.py deprecated ( a message is printed out ) and point to CondCore/CondDB/python/CondDB_cfi.py.

…ervlets for fetching Condition payloads in CondCore/ESSources/python/CondDBESSource_cfi.py. This is then loaded in Configuration/StandardSequences/python/FrontierConditions_GlobalTag_cfi.py and cloned in RecoTauTag/Configuration/python/loadRecoTauTagMVAsFromPrepDB_cfi.py.

…on/loadRecoTauTagMVAsFromPrepDB_cfi.py, not importing nor cloning from default definition, in order to avoid ESSource conflicts when defining PAT sequences. This is a workaround, not a fix.