move code to Ceph.pm, create API for ceph

PVE/API2/Makefile

 include ../../defines.mk
 
 PERLSOURCE = 			\
+	Ceph.pm			\
 	APT.pm			\
 	Subscription.pm		\
 	VZDump.pm		\

PVE/API2/Nodes.pm

@@ -30,6 +30,7 @@ use PVE::API2::Qemu;
 use PVE::API2::OpenVZ;
 use PVE::API2::VZDump;
 use PVE::API2::APT;
+use PVE::API2::Ceph;
 use JSON;
 
 use base qw(PVE::RESTHandler);
@@ -39,6 +40,11 @@ __PACKAGE__->register_method ({
     path => 'qemu',
 });
 
+__PACKAGE__->register_method ({
+    subclass => "PVE::API2::Ceph",  
+    path => 'ceph',
+});
+
 __PACKAGE__->register_method ({
     subclass => "PVE::API2::OpenVZ",  
     path => 'openvz',
@@ -108,6 +114,7 @@ __PACKAGE__->register_method ({
 	my ($param) = @_;
     
 	my $result = [
+	    { name => 'ceph' },
 	    { name => 'apt' },
 	    { name => 'version' },
 	    { name => 'syslog' },