Install epel-rpm-macros package on worker (#2338)

Install epel-rpm-macros package on worker

This makes for example spec files using %gometa -L parseable.

Reviewed-by: Maxwell G
Reviewed-by: Laura Barcziová

Author: softwarefactory-project-zuul[bot]

files/install-deps-worker.yaml

@@ -40,6 +40,8 @@
           - python3-websocket-client
           # for full support of %autorelease and %autochangelog
           - rpmautospec-rpm-macros
+          # for additional macros needed to parse certain spec files
+          - epel-rpm-macros
           # for the `pkg_tool` switch to allow centpkg
           - centpkg
         state: present