Rename all CI files to be (hopefully) unique

Per https://pagure.io/fedora-ci/general/issue/404 , as things are
right now, having CI files with the same names as those in other
repos can cause clashes. Let's rename all of ours to avoid this.
Also drop a path element in validate-comps.yaml that broke the
tests...

Signed-off-by: Adam Williamson <awilliam@redhat.com>

.zuul.yaml

@@ -1,9 +1,9 @@
  - project:
      check:
        jobs:
-         - validate
+         - validate-comps
 
  - job:
-     name: validate
+     name: validate-comps
      description: Validate comps files
-     run: ci/validate.yaml
+     run: ci/validate-comps.yaml

ci/validate-comps.yaml

@@ -7,5 +7,5 @@
       become: yes
     - name: Validate comps files
       ansible.builtin.command:
-        chdir: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}"
+        chdir: "{{ zuul.project.src_dir }}"
-        cmd: ci/validate
+        cmd: ci/validate-comps