Add case_insensitive parameter, underscore and lowercase letters to
regex pattern

Changes:
     - Add "_" underscore in regex expression
     - Add case_insensitive parameter to regex filtering SDR info
     - Add lowercase letters "a-z" in regex expression
       Example:
             "/xyz/openbmc_project/inventory/system/chassis/motherboard/CPU_0"
             "/xyz/openbmc_project/inventory/system/chassis/motherboard/cpu0

Signed-off-by: Jayashree-D <jayashree-d@hcl.com>
Change-Id: Ic647451c6e8aaaebd097a323aee0c8023a9c51ed
diff --git a/ipmi/test_ipmi_sdr.robot b/ipmi/test_ipmi_sdr.robot
index f14a57b..c5f9d47 100755
--- a/ipmi/test_ipmi_sdr.robot
+++ b/ipmi/test_ipmi_sdr.robot
@@ -195,7 +195,8 @@
     # uri_list          URI list.
 
     ${component_uris}=  Get Matches  ${uri_list}
-    ...  regexp=^.*[0-9a-z_].${component_name}\[0-9]*$
+    ...  regexp=^.*[0-9a-z_].${component_name}\[_0-9a-z]*$
+    ...  case_insensitive=${True}
     [Return]  ${component_uris}