v2.2 Down Level Test Support (#3582)

.github/workflows/test-down-level.yml

@@ -23,10 +23,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        release: ['2.0.6','2.1.8']
+        release: ['2.0.6','2.1.8','2.2.0']
         os: [ubuntu-20.04, windows-latest]
         arch: [x64]
-        tls: [schannel, openssl]
+        tls: [schannel, openssl] # TODO - add openssl3
         exclude:
         - os: ubuntu-20.04
           tls: schannel