Revert "Import RPM keys directly from URL (#475)"

This reverts commit 8c3e2a9.

tasks/pkg-redhat.yml

@@ -24,21 +24,39 @@
         ) else 'yes'
       ) }}
 
+- name: Download current RPM key
+  get_url:
+    url: "{{ datadog_yum_gpgkey_current }}"
+    dest: /tmp/DATADOG_RPM_KEY_CURRENT.public
+    force: yes
+
 - name: Import current RPM key
   rpm_key:
-    key: "{{ datadog_yum_gpgkey_current }}"
+    key: /tmp/DATADOG_RPM_KEY_CURRENT.public
     state: present
   when: not ansible_check_mode
 
+- name: Download new RPM key (Expires in 2022)
+  get_url:
+    url: "{{ datadog_yum_gpgkey_e09422b3 }}"
+    dest: /tmp/DATADOG_RPM_KEY_E09422B3.public
+    checksum: "sha256:{{ datadog_yum_gpgkey_e09422b3_sha256sum }}"
+
 - name: Import new RPM key (Expires in 2022)
   rpm_key:
-    key: "{{ datadog_yum_gpgkey_e09422b3 }}"
+    key: /tmp/DATADOG_RPM_KEY_E09422B3.public
     state: present
   when: not ansible_check_mode
 
+- name: Download new RPM key (Expires in 2024)
+  get_url:
+    url: "{{ datadog_yum_gpgkey_20200908 }}"
+    dest: /tmp/DATADOG_RPM_KEY_20200908.public
+    checksum: "sha256:{{ datadog_yum_gpgkey_20200908_sha256sum }}"
+
 - name: Import new RPM key (Expires in 2024)
   rpm_key:
-    key: "{{ datadog_yum_gpgkey_20200908 }}"
+    key: /tmp/DATADOG_RPM_KEY_20200908.public
     state: present
   when: not ansible_check_mode