Add Rajan Agaskar as an approver for the VM deployment lifecycle group

I believe I meet the requirements (See below). Thanks! 

cloudfoundry/bosh-vsphere-cpi [13 commits](https://github.com/cloudfoundry/bosh-vsphere-cpi-release/commits?author=ragaskar)
cloudfoundry/bosh-agent [4 commits](https://github.com/cloudfoundry/bosh-agent/commits?author=ragaskar)
bosh-packages/golang-release [3 commits](https://github.com/bosh-packages/golang-release/commits?author=ragaskar)
cloudfoundry/bosh [3 commits](https://github.com/cloudfoundry/bosh/commits?author=ragaskar)
cloudfoundry/bosh-linux-stemcell-builder [1 commit](https://github.com/cloudfoundry/bosh-linux-stemcell-builder/commits?author=ragaskar)
bosh-packages/ruby-release [1 commit](https://github.com/bosh-packages/ruby-release/commits?author=ragaskar)

Author: ragaskar

toc/working-groups/foundational-infrastructure.md

@@ -208,6 +208,8 @@ areas:
     github: aramprice
   - name: Konstantin Kiess
     github: nouseforaname
+  - name: Rajan Agaskar
+    github: ragaskar
   reviewers:
   - name: Matthias Vach
     github: mvach