disable heimdal for release/bulk builds, conflicts with krb5, nfs-utils fail to rebuild

mk/build.mk

@@ -22,6 +22,8 @@ DEFCONFIG=		ADK_DEBUG=n \
 			ADK_PACKAGE_E2FSCK_STATIC=n \
 			ADK_PACKAGE_KEXECINIT=n \
 			ADK_PACKAGE_INSTALLER=n \
+			ADK_PACKAGE_HEIMDAL_SERVER=n \
+			ADK_PACKAGE_LIBHEIMDAL=n \
 			ADK_PACKAGE_LM_SENSORS_DETECT=n \
 			ADK_PACKAGE_PACEMAKER=n \
 			ADK_PACKAGE_PACEMAKER_MGMTD=n \