[WIP] Extra test and build dependencies in Docker images (#15692)

* Merge conflicts:

* [skip ci] Revert changes to run_tests.sh

gundalow will update this in a different PR

* [skip ci] Add in ubuntu1604 and opensuseleap

NOTE: We are not configuring anything to use these new images yet.
Therefore no impact on Travis performance

* python-mysql for opensuse

* It's mysql-server on centos6

test/utils/docker/centos7/Dockerfile

@@ -11,13 +11,18 @@ rm -f /lib/systemd/system/basic.target.wants/*; \
 rm -f /lib/systemd/system/anaconda.target.wants/*;
 RUN yum -y install \
     acl \
+    asciidoc \
     dbus-python \
+    bzip2 \
     epel-release \
     file \
     git \
     iproute \
     make \
     mercurial \
+    mariadb-server \
+    MySQL-python \
+    rpm-build \
     rubygems \
     subversion \
     sudo \