Update RPC protocol version for Ganeti 2.4

As it's quite easy to forget updating the protocol version (and was
actually forgotten for Ganeti 2.3), it is now derived from the
configuration version (which is equivalent with the Ganeti version). The
protocol version for Ganeti 2.4 will be 2040000.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

lib/constants.py

@@ -26,7 +26,6 @@ import re
 from ganeti import _autoconf
 
 # various versions
-PROTOCOL_VERSION = 40
 RELEASE_VERSION = _autoconf.PACKAGE_VERSION
 OS_API_V10 = 10
 OS_API_V15 = 15
@@ -84,6 +83,9 @@ CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
 CONFIG_REVISION = 0
 CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
 
+#: RPC protocol version
+PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)
+
 # user separation
 DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
 ADMIN_GROUP = _autoconf.ADMIN_GROUP