cta: add test install step

cta-build.yml

 stages:
   - build:srpm
   - build:rpm
+  - test:install
 
 before_script:
   - export CTA_BUILD_ID=${CI_PIPELINE_ID}git${CI_COMMIT_SHA:0:8}
@@ -62,3 +63,22 @@ cta_rpm:
     expire_in: 2 days
     paths:
     - build_rpm/RPM/RPMS
+
+test_install:
+  except:
+    - tags
+  stage: test:install
+  retry: 1
+  image: centos:7
+  script:
+    - yum install -y wget
+    - yum install -y yum-utils epel-release
+    - yum install -y centos-release-openstack-train
+    - cp continuousintegration/docker/ctafrontend/cc7/etc/yum.repos.d/eos-citrine-depend.repo /etc/yum.repos.d/.
+    - cp continuousintegration/docker/ctafrontend/cc7/etc/yum.repos.d-public/eos-citrine.repo /etc/yum.repos.d/.
+    - rpm -import https://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol7
+    - yum-config-manager --add-repo=http://yum.oracle.com/repo/OracleLinux/OL7/oracle/instantclient/x86_64
+    - yum install -y oracle-instantclient19.3-devel oracle-instantclient19.3-sqlplus oracle-instantclient19.3-bas
+    - yum -y install yum-plugin-priorities yum-plugin-versionlock
+    - yum -y install -x cta-migration\* build_rpm/RPM/RPMS/x86_64/cta-*
+