bootconfig: Check the parsed output of the good examples

Check whether the parsed output of the good example configs are
the same as expected.

Link: https://lore.kernel.org/all/177025239529.14982.12913754615993262263.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Tested-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Author: mhiramat

tools/bootconfig/samples/exp-good-array-space-comment.bconf

@@ -0,0 +1 @@
+key = "value1", "value2", "value3";

tools/bootconfig/samples/exp-good-comment-after-value.bconf

@@ -0,0 +1 @@
+key = "value";

tools/bootconfig/samples/exp-good-mixed-append.bconf

@@ -0,0 +1,2 @@
+key = "foo", "bar";
+keyx.subkey = "value";

tools/bootconfig/samples/exp-good-mixed-kv1.bconf

@@ -0,0 +1,2 @@
+key = "value";
+key.subkey = "another-value";

tools/bootconfig/samples/exp-good-mixed-kv2.bconf

@@ -0,0 +1,2 @@
+key = "another-value";
+key.subkey = "value";

tools/bootconfig/samples/exp-good-mixed-kv3.bconf

@@ -0,0 +1,5 @@
+key = "value";
+key {
+	subkey1;
+	subkey2 = "foo";
+}

tools/bootconfig/samples/exp-good-mixed-override.bconf

@@ -0,0 +1,2 @@
+key = "value2";
+key.foo = "bar";

tools/bootconfig/samples/exp-good-override.bconf

@@ -0,0 +1,4 @@
+key {
+	word = "2", "3";
+	new.word = "new";
+}

tools/bootconfig/samples/exp-good-printables.bconf

@@ -0,0 +1,2 @@
+key = "	
+ !#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~";

tools/bootconfig/samples/exp-good-simple.bconf

@@ -0,0 +1,8 @@
+key {
+	word1 = "1";
+	word2 = "2";
+	word3 = "3";
+	word4 = "4";
+	word5 = "5";
+	word6 = "6";
+}