BIOS: Implement HelpText and DisplayName properties

Introduce HelpText and DisplayName fields in the PLDM BIOS JSONs, these should
be parsed and passed to the D-Bus APIs that populates the BIOS table.
https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/xyz/openbmc_project/BIOSConfig/Manager.interface.yaml#L68
Also, they have the same names in the Redfish schema.
https://redfish.dmtf.org/schemas/v1/AttributeRegistry.v1_3_3.json

Tested: test with JSON
https://gist.github.com/lxwinspur/2afffff2e445fddf90dfed6eceef4014

busctl get-property xyz.openbmc_project.BIOSConfigManager
/xyz/openbmc_project/bios_config/manager
xyz.openbmc_project.BIOSConfig.Manager BaseBIOSTable

a{s(sbsssvva(sv))} 5

"CodeUpdatePolicy"
"xyz.openbmc_project.BIOSConfig.Manager.AttributeType.Enumeration"
true "CodeUpdatePolicy DisplayName" "CodeUpdatePolicy HelpText" "" s
"Concurrent" s "Concurrent" 2
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.OneOf" s "Concurrent"
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.OneOf" s "Disruptive"

"Led"
"xyz.openbmc_project.BIOSConfig.Manager.AttributeType.Enumeration"
false "Led DisplayName" "Led HelpText" "" s "Off" s "Off" 2
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.OneOf" s "On"
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.OneOf" s "Off"

"Model"
"xyz.openbmc_project.BIOSConfig.Manager.AttributeType.String"
false "Model DisplayName" "Model HelpText" "" s "powersupply0" s "FP5280G2" 2
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.MinStringLength" x 1
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.MaxStringLength" x 100

"OUTLET"
"xyz.openbmc_project.BIOSConfig.Manager.AttributeType.Integer"
false "OUTLET DisplayName" "OUTLET HelpText" "" x 9127925392260618112 x 0 3
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.LowerBound" x 0
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.UpperBound" x 68002
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.ScalarIncrement" x 1

"str_example3"
"xyz.openbmc_project.BIOSConfig.Manager.AttributeType.String"
true "str_example3 DisplayName" "str_example3 HelpText" "" s "ef" s "ef" 2
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.MinStringLength" x 1
"xyz.openbmc_project.BIOSConfig.Manager.BoundType.MaxStringLength" x 100

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I4e0e28a6fbaeb409b4d57dfcb54d79aee1c5b211
diff --git a/test/libpldmresponder_bios_string_attribute_test.cpp b/test/libpldmresponder_bios_string_attribute_test.cpp
index 01079c3..c086bbc 100644
--- a/test/libpldmresponder_bios_string_attribute_test.cpp
+++ b/test/libpldmresponder_bios_string_attribute_test.cpp
@@ -34,7 +34,9 @@
             "maximum_string_length" : 100,
             "default_string_length" : 2,
             "default_string" : "ef",
-            "readOnly" : true
+            "readOnly" : true,
+            "helpText" : "HelpText",
+            "displayName" : "DisplayName"
         })"_json;
     BIOSStringAttribute stringReadOnly{jsonStringReadOnly, nullptr};
     EXPECT_EQ(stringReadOnly.name, "str_example3");
@@ -53,7 +55,9 @@
             "string_type" : "ASCII",
             "minimum_string_length" : 1,
             "maximum_string_length" : 100,
-            "default_string" : "ef"
+            "default_string" : "ef",
+            "helpText" : "HelpText",
+            "displayName" : "DisplayName"
         })"_json; // missing default_string_length
 
     EXPECT_THROW((BIOSStringAttribute{jsonStringReadOnlyError, nullptr}),
@@ -67,6 +71,8 @@
             "default_string_length" : 3,
             "default_string" : "abc",
             "readOnly" : false,
+            "helpText" : "HelpText",
+            "displayName" : "DisplayName",
             "dbus" : {
                 "object_path" : "/xyz/abc/def",
                 "interface" : "xyz.openbmc_project.str_example1.value",
@@ -92,7 +98,9 @@
             "maximum_string_length" : 100,
             "default_string_length" : 3,
             "default_string" : "abc",
-            "readOnly" : true
+            "readOnly" : true,
+            "helpText" : "HelpText",
+            "displayName" : "DisplayName"
         })"_json;
 
     std::vector<uint8_t> expectedAttrEntry{
@@ -128,6 +136,8 @@
             "default_string_length" : 3,
             "default_string" : "abc",
             "readOnly" : false,
+            "helpText" : "HelpText",
+            "displayName" : "DisplayName",
             "dbus" : {
                 "object_path" : "/xyz/abc/def",
                 "interface" : "xyz.openbmc_project.str_example1.value",
@@ -177,6 +187,8 @@
             "default_string_length" : 3,
             "default_string" : "abc",
             "readOnly" : false,
+            "helpText" : "HelpText",
+            "displayName" : "DisplayName",
             "dbus" : {
                 "object_path" : "/xyz/abc/def",
                 "interface" : "xyz.openbmc_project.str_example1.value",