Merge branch 'stable-3.1'
* stable-3.1:
PathToLockId: Refactor to use a FunctionalInterface
LfsAuthUserProvider: Refactor to avoid name hiding
LfsLocksHandle: Collapse duplicate if-block
LfsLocksHandler: Simplify lambda expression
LfsLocksHandler: Call Optional#isPresent before #get
Use Truth8 to assert about Optional#isPresent
LfsCipherTest: Extract repeated string to a constant
InitLfs: Remove unnecessary empty overridden method
LfsSshAuth: Remove redundant 'throws' declaration
LfsGson: Remove unnecessary 'throws' declarations
LfsDateTime: Add private constructor to hide default constructor
Remove LfsDateTimeTest and dependency on joda-time
Bazel: Mark joda-time as test only
Change-Id: I37393a8e50b2f8c014f366dcfc660e4759d4760d
