Rename "master device" to "primary device"

...ests/src/main/java/org/signal/integration/Operations.java

...-tests/src/main/java/org/signal/integration/TestUser.java

...s/src/test/java/org/signal/integration/MessagingTest.java

...rsystems/textsecuregcm/auth/BaseAccountAuthenticator.java

...ersystems/textsecuregcm/auth/grpc/AuthenticationUtil.java

...ystems/textsecuregcm/controllers/AccountControllerV2.java

...ersystems/textsecuregcm/controllers/DeviceController.java

...spersystems/textsecuregcm/controllers/KeysController.java

...rsystems/textsecuregcm/controllers/MessageController.java

...ems/textsecuregcm/controllers/RegistrationController.java

...whispersystems/textsecuregcm/grpc/DevicesGrpcService.java

...persystems/textsecuregcm/limits/PushChallengeManager.java

...ersystems/textsecuregcm/push/PushNotificationManager.java

...ava/org/whispersystems/textsecuregcm/storage/Account.java

...whispersystems/textsecuregcm/storage/AccountsManager.java

...persystems/textsecuregcm/storage/ChangeNumberManager.java

...java/org/whispersystems/textsecuregcm/storage/Device.java

...rsystems/textsecuregcm/websocket/WebSocketConnection.java

...persystems/textsecuregcm/workers/UnlinkDeviceCommand.java

...cm/auth/AuthEnablementRefreshRequirementProviderTest.java