Verify http proxy environment variables absense in standard suite

Author: ggiguash

test/suites/standard2/configuration.robot

@@ -141,6 +141,14 @@ Crio Uses Crun Runtime
     ${stdout}    ${stderr}    ${rc}=    Command Execution    rpm -q microshift-low-latency
     IF    ${rc} == 0    Should Contain    ${runtime}    high-performance
 
+Http Proxy Is Not Defined
+    [Documentation]    Verify that the http proxy environment variables are not defined
+
+    ${stdout}    ${stderr}    ${rc}=    Command Execution    env | grep -iE 'http_proxy|https_proxy|no_proxy'
+    # The grep command returns a non-zero code when the output is empty
+    Should Not Be Equal    ${rc}    0
+    Should Be Empty    ${stdout}
+
 
 *** Keywords ***
 Setup