Made changed @nickjj suggested

defaults/main.yml

@@ -23,3 +23,9 @@ rvm1_rvm_version: 'stable'
 
 # Check and update rvm, disabling this will force rvm to never update
 rvm1_rvm_check_for_updates: True
+
+# GPG key verification, use an empty string if you want to skip this
+# Note: Unless you know what you're doing, just keep it as is
+#           Identity proof: https://keybase.io/mpapis
+#           PGP message: https://rvm.io/mpapis.asc
+rvm1_gpg_keys: 'D39DC0E3'

tasks/rvm.yml

@@ -29,7 +29,7 @@
 - name: Import GPG keys
   command: 'gpg --keyserver hkp://keys.gnupg.net --recv-keys {{ rvm1_gpg_keys }}'
   changed_when: False
-  when: not rvm_binary.stat.exists
+  when: not rvm_binary.stat.exists and rvm1_gpg_keys
 
 - name: Install rvm
   command: >

vars/main.yml

@@ -20,5 +20,3 @@ rvm1_symlink_binaries:
   - 'testrb'
 
 rvm1_symlink_to: '/usr/local/bin'
-
-rvm1_gpg_keys: 'D39DC0E3'