ceph.spec.in: s/pkgversion/version_nodots/

`python3_pkgversion` is now defined as 3, while we don't have packages
like python3-Cython yet in EPEL7. but we do have `python36-Cython`. so
let's use `python3_version_nodots` instead.

Signed-off-by: Kefu Chai <[email protected]>

Author: tchaikov

ceph.spec.in

@@ -87,6 +87,7 @@
 %{!?_udevrulesdir: %global _udevrulesdir /lib/udev/rules.d}
 %{!?tmpfiles_create: %global tmpfiles_create systemd-tmpfiles --create}
 %{!?python3_pkgversion: %global python3_pkgversion 3}
+%{!?python3_version_nodots: %global python3_version_nodots 3}
 %{!?python3_version: %global python3_version 3}
 # define _python_buildid macro which will expand to the empty string when
 # building with python2
@@ -269,7 +270,7 @@ BuildRequires:	python2-Cython
 %endif
 BuildRequires:	python%{python3_pkgversion}-devel
 BuildRequires:	python%{python3_pkgversion}-setuptools
-BuildRequires:	python%{python3_pkgversion}-Cython
+BuildRequires:	python%{python3_version_nodots}-Cython
 BuildRequires:	python%{_python_buildid}-prettytable
 BuildRequires:	python%{_python_buildid}-sphinx
 BuildRequires:	lz4-devel >= 1.7