[setup_repos] Exclude python3-paramiko from EPEL repo

python3-paramiko is available in RHEL OSP repos, using
newer version(2.12) from EPEL causing issues during tempest
run. Let's exclude it.

Resolves: OSPNET-922
Change-Id: I3deb5d71d883def69af1070fd4603804b8194317

roles/setup_repos/tasks/main.yml

@@ -76,6 +76,8 @@
   yum_repository:
     name: epel
     description: EPEL YUM repo
+    exclude:
+      - python3-paramiko
     metalink: "https://mirrors.fedoraproject.org/metalink?repo=epel-{{ ansible_distribution_major_version }}&arch=$basearch&infra=$infra&content=$contentdir"
     gpgkey: "https://download.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-{{ ansible_distribution_major_version }}"
     enabled: no