Fix improper keys in HOT templates

We've been doing stronger validation nowadays and several templates are
container upper-case keys that don't validate anymore. This patch fixes
them.

Change-Id: I791195104484fa17096d6b7833387ef2d3f9acc0
Delete WordPress_Single_Instance_puppet.template

It uses AWS::RDS::DBSecurityGroup that we don't support. Maybe we can
reinstantiate it one day if we do support it.

Change-Id: Ia97a7f70a8905c7ef1b063a9c8eb551560b932e6
Merge "Delete WordPress_Single_Instance_puppet.template"
Merge "Fix improper keys in HOT templates"
Remove security group egress rules

The egress security group rules were too restrictive, blocking
necessary traffic, including cloud-init metadata.
Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1080638

Change-Id: Ia11f4a81d56d76418530dab6b09478648a1cfbfd
Secure private repo files added to environment

The yum repo files had insecure settings for sslverify and
gpgcheck. Also change references to http to https.

Change-Id: I10cbc33a734f9ed36ef6f22174c65efaf3b659d7