Use docker-squash=1.0.5 from pypi

Version from brew has broken dependencies because of updated
python-docker

Author: Marek Skalický

.gitignore

@@ -0,0 +1,3 @@
+jenkins_jobs.ini
+jenkins_jobs_rhscl.ini
+local/

yaml/builders/prepare-centos.yaml

@@ -34,12 +34,12 @@
 
             # Prepare docker
             ssh -F ssh_config host yum -y install docker perl git centos-release-scl-rh rsync golang-github-cpuguy83-go-md2man groff-base centos-release-openshift-origin epel-release
-            ssh -F ssh_config host yum -y install source-to-image python27-python-virtualenv origin-clients distgen
+            ssh -F ssh_config host yum -y install source-to-image rh-python36-python-virtualenv origin-clients distgen
             ssh -F ssh_config host "sed -i \"s|OPTIONS='|OPTIONS='--insecure-registry 172.30.0.0/16 |\" /etc/sysconfig/docker; iptables -F"
             ssh -F ssh_config host service docker start
             # Install docker-squash
-            ssh -F ssh_config host 'scl enable python27 -- virtualenv --python /usr/bin/python /usr/local/docker-squash && . /usr/local/docker-squash/bin/activate && \
-              pip install "docker-squash==1.0.5" && echo ". /usr/local/docker-squash/bin/activate" > ~/.bashrc'
+            ssh -F ssh_config host 'scl enable rh-python36 -- virtualenv --python python3 /usr/local/docker-squash && . /usr/local/docker-squash/bin/activate && \
+              pip install "docker-squash==1.0.5" && echo ". /usr/local/docker-squash/bin/activate" > /root/.bashrc'
             # Enable sudo for ssh (required by test cases)
             ssh -F ssh_config host 'sed -i -e "s|Defaults    requiretty||" /etc/sudoers'
 

yaml/builders/prepare-rhel.yaml

@@ -32,3 +32,8 @@
             # Prepare distgen (TEMPORARY FIX - https://gitlab.cee.redhat.com/platform-eng-core-services/coreservices-jenkins-slaves/merge_requests/16)
             ssh -F ssh_config host yum -y install epel-release
             ssh -F ssh_config host yum -y install distgen
+
+            # Install docker-squash (TEMPORARY FIX - https://gitlab.cee.redhat.com/platform-eng-core-services/coreservices-jenkins-slaves/merge_requests/17)
+            ssh -F ssh_config host yum -y install rh-python36-python-virtualenv
+            ssh -F ssh_config host 'scl enable rh-python36 -- virtualenv --python python3 /usr/local/docker-squash && . /usr/local/docker-squash/bin/activate && \
+              pip install "docker-squash==1.0.5" && echo ". /usr/local/docker-squash/bin/activate" > /root/.bashrc'