Add OTP-22 to CI, deprecate OTP-17

.cirrus.yml

@@ -1,11 +1,11 @@
 test_task:
   container:
     matrix:
+      - image: erlang:22
       - image: erlang:21
       - image: erlang:20
       - image: erlang:19
       - image: erlang:18
-      - image: erlang:17
   test_script: |
     ./bootstrap
     ./rebar3 ct

.travis.yml

@@ -1,8 +1,6 @@
 language: erlang
 matrix:
   include:
-    - os: linux
-      otp_release: 17.5
     - os: linux
       otp_release: 18.3
     - os: linux
@@ -11,6 +9,8 @@ matrix:
       otp_release: 20.0
     - os: linux
       otp_release: 21.0
+    - os: linux
+      otp_release: 22.0
     - os: osx
       language: generic
 before_script: