deb,rpm: python-cephfs should depend on python-rados

in `cephfs.pyx` we `cimport rados`, and in
LibCephFs.create_with_rados(), Rados.cluster is accesssed without GIL,
so we need to import the rados module for cephfs to ensure that it's
safe to access this attribute without GIL.

dh_python2 and dh_python3 cannot fill ${python:Depends} and
${python3:Depends} with this dependency, so we need to set it
explicitly.

Fixes: http://tracker.ceph.com/issues/24918
Signed-off-by: Kefu Chai <[email protected]>

ceph.spec.in

@@ -730,9 +730,7 @@ Summary:	Python 2 libraries for Ceph distributed file system
 Group:		Development/Libraries/Python
 %endif
 Requires:	libcephfs2 = %{_epoch_prefix}%{version}-%{release}
-%if 0%{?suse_version}
-Recommends: python-rados = %{_epoch_prefix}%{version}-%{release}
-%endif
+Requires:	python-rados = %{_epoch_prefix}%{version}-%{release}
 Obsoletes:	python-ceph < %{_epoch_prefix}%{version}-%{release}
 %description -n python-cephfs
 This package contains Python 2 libraries for interacting with Cephs distributed

debian/control

@@ -891,6 +891,7 @@ Package: python-rgw
 Architecture: linux-any
 Section: python
 Depends: librgw2 (>= ${binary:Version}),
+         python-rados (= ${binary:Version}),
          ${misc:Depends},
          ${python:Depends},
          ${shlibs:Depends},
@@ -925,6 +926,7 @@ Package: python3-rgw
 Architecture: linux-any
 Section: python
 Depends: librgw2 (>= ${binary:Version}),
+         python3-rados (= ${binary:Version}),
          ${misc:Depends},
          ${python3:Depends},
          ${shlibs:Depends},
@@ -957,6 +959,7 @@ Package: python-cephfs
 Architecture: linux-any
 Section: python
 Depends: libcephfs2 (= ${binary:Version}),
+         python-rados (= ${binary:Version}),
          ${misc:Depends},
          ${python:Depends},
          ${shlibs:Depends},
@@ -991,6 +994,7 @@ Package: python3-cephfs
 Architecture: linux-any
 Section: python
 Depends: libcephfs2 (= ${binary:Version}),
+         python3-rados (= ${binary:Version}),
          ${misc:Depends},
          ${python3:Depends},
          ${shlibs:Depends},