Add retries for get_url and package tasks

Occasionally we see connection issues in CI.

Change-Id: I93cc6793cf23fd21462cec6a4deb2ea35d36da21

ansible/roles/virtualbmc-daemon/tasks/main.yml

@@ -37,6 +37,9 @@
     url: "{{ vbmcd_python_upper_constraints_url }}"
     dest: "{{ u_c_file.path }}"
     mode: "0644"
+  register: result
+  until: result is success
+  retries: 3
 
 # NOTE(yoctozepto): It is preferable to use the libvirt python binding that
 # is delivered with the distribution as it is guaranteed to work with the

playbooks/tenks-deploy-teardown/pre.yml

@@ -25,6 +25,9 @@
           - python3
           - python3-pip
           - python3-setuptools
+      register: result
+      until: result is success
+      retries: 3
 
     - name: Create venv for tenks and upgrade pip
       pip: