Install both rvm gpg keys in vagrant (#9670)

Vagrantfile

@@ -44,7 +44,7 @@ sudo apt-get install \
 
 # Install rvm
 read RUBY_VERSION < .ruby-version
-gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
 curl -sSL https://raw.githubusercontent.com/rvm/rvm/stable/binscripts/rvm-installer | bash -s stable --ruby=$RUBY_VERSION
 source /home/vagrant/.rvm/scripts/rvm