Do not name the RPM repo file differently depending on the Agent vers…

…ion (#311)

Use datadog.repo as the name, to be consistent with other install methods.

tasks/pkg-redhat.yml

@@ -23,32 +23,63 @@
     state: present
   when: not ansible_check_mode
 
-- name: Install Datadog yum repo
+- name: Install Datadog Agent 5 yum repo
   yum_repository:
-    name: "ansible_datadog_{{ item.key }}"
+    name: datadog
     description: Datadog, Inc.
-    baseurl: "{{ item.value }}"
+    baseurl: "{{ datadog_agent5_yum_repo }}"
     enabled: yes
     gpgcheck: yes
-    gpgkey: "{% if datadog_agent_major_version|int == 7 %}{{ datadog_yum_gpgkey_20200908 }}{% else %}{{ datadog_yum_gpgkey }}{% endif %}"
-    state: "{% if item.key == datadog_agent_major_version|int and datadog_yum_repo | length == 0 %}present{% else %}absent{% endif %}"
-  when: (not ansible_check_mode)
-  with_dict:
-    5: '{{ datadog_agent5_yum_repo }}'
-    6: '{{ datadog_agent6_yum_repo }}'
-    7: '{{ datadog_agent7_yum_repo }}'
-
-- name: (Custom) Install Datadog yum repo
+    gpgkey: "{{ datadog_yum_gpgkey }}"
+  register: repofile5
+  when: (datadog_agent_major_version|int == 5) and (datadog_yum_repo | length == 0) and (not ansible_check_mode)
+
+- name: Install Datadog Agent 6 yum repo
   yum_repository:
-    name: ansible_datadog_custom
+    name: datadog
+    description: Datadog, Inc.
+    baseurl: "{{ datadog_agent6_yum_repo }}"
+    enabled: yes
+    gpgcheck: yes
+    gpgkey: "{{ datadog_yum_gpgkey }}"
+  register: repofile6
+  when: (datadog_agent_major_version|int == 6) and (datadog_yum_repo | length == 0) and (not ansible_check_mode)
+
+- name: Install Datadog Agent 7 yum repo
+  yum_repository:
+    name: datadog
+    description: Datadog, Inc.
+    baseurl: "{{ datadog_agent7_yum_repo }}"
+    enabled: yes
+    gpgcheck: yes
+    gpgkey: "{{ datadog_yum_gpgkey_20200908 }}"
+  register: repofile7
+  when: (datadog_agent_major_version|int == 7) and (datadog_yum_repo | length == 0) and (not ansible_check_mode)
+
+- name: Install Datadog Custom yum repo
+  yum_repository:
+    name: datadog
     description: Datadog, Inc.
     baseurl: "{{ datadog_yum_repo }}"
     enabled: yes
     gpgcheck: yes
     gpgkey: "{{ datadog_yum_gpgkey }}"
-    state: present
+  register: repofilecustom
   when: (datadog_yum_repo | length > 0) and (not ansible_check_mode)
 
+- name: Clean repo metadata if repo changed # noqa 503
+  command: yum clean metadata --disablerepo="*" --enablerepo=datadog
+  ignore_errors: yes # Cleaning the metadata is only needed when downgrading a major version of the Agent, don't fail because of this
+  args:
+    warn: no
+  when: repofile5.changed or repofile6.changed or repofile7.changed or repofilecustom.changed
+
+- name: Remove old yum repo files
+  yum_repository:
+    name: "ansible_datadog_{{ item }}"
+    state: absent
+  with_items: [ 5, 6, 7, "custom" ]
+
 - include_tasks: pkg-redhat/install-pinned.yml
   when: datadog_agent_redhat_version is defined