Adjust A1 python-verify job to skip doc tox env

Invoke tox with code and flake8 only, not all environments;
the separate RTDv3 job verifies the RTD docs

Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>
Change-Id: I71f86701732340821c0b1976de9aee2a0db78880
diff --git a/jjb/ric-plt-a1/ric-plt-a1.yaml b/jjb/ric-plt-a1/ric-plt-a1.yaml
index e6ac32e..837cd05 100644
--- a/jjb/ric-plt-a1/ric-plt-a1.yaml
+++ b/jjb/ric-plt-a1/ric-plt-a1.yaml
@@ -47,6 +47,8 @@
     pre-build-script: !include-raw-escape:
       - ../shell/install-deb-rmr.sh
     python-version: python3
+    # skip docs on verify
+    tox-envs: code,flake8
     stream:
       # run verify on all branches
       # the ANT pattern is **/{branch}, we are exploiting that.