Fix Gnocchi support ceph

Based on gnocchi issue #412 [0], cradox is more stable and recommended
to use.

* Add cradox for source and  RHEL family distro binary.
* Ubuntu binary lacks of cradox package, so install from pypi

[0] gnocchixyz/gnocchi#412

Co-Authored-By: Jeffrey Zhang <zhang.lei.fly@gmail.com>
Change-Id: Icf7d6425884fb889d48c786caebbfc7b7050ae8e
Closes-Bug: #1718701

docker/gnocchi/gnocchi-base/Dockerfile.j2

@@ -16,7 +16,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
             'mod_wsgi',
             'openstack-gnocchi-common',
             'python-ldappool',
-            'python-rados'
+            'python2-cradox'
         ] %}
 
 {{ macros.install_packages(gnocchi_base_packages | customizable("packages")) }}
@@ -26,25 +26,33 @@ RUN sed -i -r 's,^(Listen 80),#\1,' /etc/httpd/conf/httpd.conf \
 
        {% set gnocchi_base_packages = [
             'apache2',
+            'build-essential',
             'gnocchi-common',
             'libapache2-mod-wsgi',
+            'librados-dev',
+            'python-dev',
             'python-ldappool',
-            'python-rados'
+            'python-rados',
+            'python-setuptools'
+        ] %}
+        {% set gnocchi_base_pip_packages = [
+            'cradox'
         ] %}
 
 {{ macros.install_packages(gnocchi_base_packages | customizable("packages")) }}
-RUN truncate -s 0 /etc/apache2/ports.conf
+RUN {{ macros.install_pip(gnocchi_base_pip_packages | customizable("pip_packages"), constraints=false) }} \
+    && truncate -s 0 /etc/apache2/ports.conf
 
     {% endif %}
 {% elif install_type == 'source' %}
     {% if base_distro in ['centos', 'oraclelinux', 'rhel'] %}
 
        {% set gnocchi_base_packages = [
             'httpd',
+            'librados2-devel',
             'mod_ssl',
             'mod_wsgi',
-            'python-ldappool',
-            'python-rados'
+            'python-ldappool'
         ] %}
 
         # on x86-64 pip grabs precompiled numpy/scipy - on aarch64/ppc64le
@@ -66,8 +74,8 @@ RUN mkdir -p /var/www/cgi-bin/gnocchi \
        {% set gnocchi_base_packages = [
             'apache2',
             'libapache2-mod-wsgi',
-            'python-ldappool',
-            'python-rados'
+            'librados-dev',
+            'python-ldappool'
         ] %}
 
         # on x86-64 pip grabs precompiled numpy/scipy - on aarch64/ppc64le