ITPLT-2247 add missing aws region var to all tests requiring it

roles/confluence_config/molecule/aurora/converge.yml

@@ -14,6 +14,7 @@
     atl_cluster_node_id: 'FAKEID'
     atl_autologin_cookie_age: "COOKIEAGE"
     atl_local_ipv4: "1.1.1.1"
+    ansible_ec2_placement_region: 'us-east-1'
 
   roles:
     - role: linux_common

roles/confluence_config/molecule/default/converge.yml

@@ -21,6 +21,7 @@
     atl_proxy_port: "80"
     atl_db_preferredtestquery: "select 1;"
     atl_hazelcast_network_aws_tag_key: "my-cluster-tag"
+    ansible_ec2_placement_region: 'us-east-1'
 
   roles:
     - role: linux_common

roles/confluence_config/molecule/password_char_escaping/converge.yml

@@ -18,6 +18,7 @@
     atl_tomcat_scheme: "http"
     atl_proxy_name: "localhost"
     atl_proxy_port: "80"
+    ansible_ec2_placement_region: 'us-east-1'
 
   roles:
     - role: linux_common

roles/confluence_config/molecule/system_jdk/converge.yml

@@ -21,6 +21,7 @@
     atl_db_preferredtestquery: "select 1;"
     atl_use_system_jdk: true
     atl_download_format: "tarball"
+    ansible_ec2_placement_region: 'us-east-1'
 
   roles:
     - role: linux_common