[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/centos6/Dockerfile

@@ -1,14 +1,20 @@
 # Latest version of centos
 FROM centos:centos6
-RUN yum -y update; yum clean all; 
+RUN yum -y update; yum clean all;
 RUN yum -y install \
     acl \
+    asciidoc \
+    bzip2 \
     epel-release \
     file \
     gcc \
     git \
     make \
     mercurial \
+    mysql \
+    mysql-server \
+    MySQL-python \
+    rpm-build \
     rubygems \
     sed \
     subversion \
@@ -16,7 +22,8 @@ RUN yum -y install \
     unzip \
     openssh-clients \
     openssh-server \
-    which
+    which \
+    zip
 RUN yum -y install \
     PyYAML \
     python-coverage \