services: Introduce NativeDaemonConnector class

This class provides an interface to communicate with native daemons using the
libsysutils framework communication code.

Signed-off-by: San Mehat <san@google.com>

NativeDaemonConnector: fix whitespace

Signed-off-by: San Mehat <san@google.com>

NativeDaemonConnector: Fix review comments

Signed-off-by: San Mehat <san@google.com>

NativeDaemonConnector: On an error, re-try the connection

Signed-off-by: San Mehat <san@google.com>