detect/ssh: minor --list-keywords improvements

src/detect-ssh-proto-version.c

@@ -83,6 +83,7 @@ void DetectSshVersionRegister(void)
     sigmatch_table[DETECT_AL_SSH_PROTOVERSION].Free  = DetectSshVersionFree;
     sigmatch_table[DETECT_AL_SSH_PROTOVERSION].RegisterTests = DetectSshVersionRegisterTests;
     sigmatch_table[DETECT_AL_SSH_PROTOVERSION].flags = SIGMATCH_QUOTES_OPTIONAL;
+    sigmatch_table[DETECT_AL_SSH_PROTOVERSION].alternative = DETECT_AL_SSH_PROTOCOL;
 
     DetectSetupParseRegexes(PARSE_REGEX, &parse_regex, &parse_regex_study);
 

src/detect-ssh-software-version.c

@@ -97,6 +97,7 @@ void DetectSshSoftwareVersionRegister(void)
     sigmatch_table[DETECT_AL_SSH_SOFTWAREVERSION].Free  = DetectSshSoftwareVersionFree;
     sigmatch_table[DETECT_AL_SSH_SOFTWAREVERSION].RegisterTests = DetectSshSoftwareVersionRegisterTests;
     sigmatch_table[DETECT_AL_SSH_SOFTWAREVERSION].flags = SIGMATCH_QUOTES_OPTIONAL;
+    sigmatch_table[DETECT_AL_SSH_SOFTWAREVERSION].alternative = DETECT_AL_SSH_SOFTWARE;
 
     DetectSetupParseRegexes(PARSE_REGEX, &parse_regex, &parse_regex_study);