use unique keypair

molecule/ec2-centos-7/create.yml

@@ -25,7 +25,7 @@
         to_port: 0
         cidr_ip: '0.0.0.0/0'
 
-    keypair_name: molecule_key
+    keypair_name: "molecule_key_{{ molecule_yml.platforms }}"
     keypair_path: "{{ lookup('env', 'MOLECULE_EPHEMERAL_DIRECTORY') }}/ssh_key"
   tasks:
     - name: Create security group
@@ -35,16 +35,10 @@
         rules: "{{ security_group_rules }}"
         rules_egress: "{{ security_group_rules_egress }}"
 
-    - name: Test for presence of local keypair
-      stat:
-        path: "{{ keypair_path }}"
-      register: keypair_local
-
     - name: Delete remote keypair
       ec2_key:
         name: "{{ keypair_name }}"
         state: absent
-      when: not keypair_local.stat.exists
 
     - name: Create keypair
       ec2_key: