unit tests: Add case for quoted configuration values

This adds a unit test to ensure `kdump_get_conf_val` correctly strips
surrounding quotes from configuration options. This test case covers the
bug fixed in the previous commit.

Signed-off-by: Lichen Liu <[email protected]>

Author: licliu

spec/kdump-lib-initramfs_spec.sh

@@ -12,6 +12,7 @@ Describe 'kdump-lib-initramfs'
 			#|dracut_args --omit-drivers "cfg80211 snd" --add-drivers "ext2 ext3"
 			#|sshkey /root/.ssh/kdump_id_rsa
 			#|ssh [email protected]
+			#|core_collector "makedumpfile -l --message-level 7 -d 31"
 		}
 		kdump_config >$KDUMP_CONFIG_FILE
 		Context 'Given different cases'
@@ -21,13 +22,15 @@ Describe 'kdump-lib-initramfs'
 			#  - complicate value for dracut_args
 			#  - Given two parameters, retrive one parameter that has value specified
 			#  - Given two parameters (in reverse order), retrive one parameter that has value specified
+			#  - values are enclosed in quotes
 			Parameters
 				"#1" nfs my.server.com:/export/tmp
 				"#2" ssh [email protected]
 				"#3" failure_action shell
 				"#4" dracut_args '--omit-drivers "cfg80211 snd" --add-drivers "ext2 ext3"'
 				"#5" 'ssh\|aaa' [email protected]
 				"#6" 'aaa\|ssh' [email protected]
+				"#7" core_collector "makedumpfile -l --message-level 7 -d 31"
 			End
 
 			It 'should handle all cases correctly'