Robotframework request package upgrade changes

Current working package version
   robotframework-requests            0.7.2

To Test:
      pip3 install robotframework-requests -U
                 or
      # Once this commit is merged.
      pip3 install -r requirements.txt

      Version latest:
      robotframework-requests         0.9.3

Refer Documentation:
   https://marketsquare.github.io/robotframework-requests/doc/RequestsLibrary.html

What is not changed:
     - The test cases under directory tests/ is not modified and is
       deprecated but you can continue using it with older package
       and configuration using

       git clone -b v3.0-stable https://github.com/openbmc/openbmc-test-automation

Tested:
      Upstream HW_CI test list, firmware code update and few other
      test suite like ipmi, certificate, dumps, ffdc and redfish
      test suites.

Note: I have not tested end to end, so it is likely there could be
      grey areas where it could fail but should be minor w.r.t
      response data format.

Resolves:  openbmc/openbmc-test-automation#2105

Change-Id: Ie03b25ff88948bcccb09e9d82f8da86e28c92697
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/openbmc_ffdc_methods.robot b/lib/openbmc_ffdc_methods.robot
index fe68c9f..339bc8e 100755
--- a/lib/openbmc_ffdc_methods.robot
+++ b/lib/openbmc_ffdc_methods.robot
@@ -297,8 +297,7 @@
       ${resp}=  OpenBMC Get Request  ${cmd[1]}  quiet=${1}  timeout=${30}
       ${status}=  Run Keyword and Return Status  Should Be Equal As Strings  ${resp.status_code}  ${HTTP_OK}
       Run Keyword If  '${status}' == '${False}'  Continue For Loop
-      ${jsondata}=  to json  ${resp.content}  pretty_print=True
-      Write Data To File  ${\n}${jsondata}${\n}  ${logpath}
+      Write Data To File  ${\n}${resp.json()}${\n}  ${logpath}
       Append To List  ${ffdc_file_list}  ${logpath}
     END