MINOR: http-htx: Move htx sample fetches in the scope "internal"

HTX sample fetches are now prefixed by "internal." to explicitly reserve their
uses for debugging or testing purposes.
diff --git a/reg-tests/http-messaging/http_msg_full_on_eom.vtc b/reg-tests/http-messaging/http_msg_full_on_eom.vtc
index 8052b7b..58824b8 100644
--- a/reg-tests/http-messaging/http_msg_full_on_eom.vtc
+++ b/reg-tests/http-messaging/http_msg_full_on_eom.vtc
@@ -37,7 +37,7 @@
 	tcp-response content accept if { res.len gt 15272 }
 	tcp-response content reject
 
-        http-response deny if { htx.has_eom -m bool } or { htx.free_data gt 1024 }
+        http-response deny if { internal.htx.has_eom -m bool } or { internal.htx.free_data gt 1024 }
         server srv1 ${s1_addr}:${s1_port}
 
     frontend fe1
@@ -45,7 +45,7 @@
         option http-buffer-request
         log ${S_addr}:${S_port} local0 debug err
         bind "fd@${fe1}"
-        http-request deny if ! { req.body_len eq 15200 } or { htx.has_eom -m bool } or { htx.free_data gt 1024 }
+        http-request deny if ! { req.body_len eq 15200 } or { internal.htx.has_eom -m bool } or { internal.htx.free_data gt 1024 }
         use_backend be1
 } -start
 
diff --git a/src/http_htx.c b/src/http_htx.c
index f9137db..6de7055 100644
--- a/src/http_htx.c
+++ b/src/http_htx.c
@@ -1320,22 +1320,22 @@
  * Note: htx sample fetches should only used for developpement purpose.
  */
 static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
-	{ "strm.is_htx",         smp_fetch_is_htx,           0,            NULL,           SMP_T_BOOL, SMP_USE_L6REQ },
+	{ "internal.strm.is_htx",         smp_fetch_is_htx,           0,            NULL,           SMP_T_BOOL, SMP_USE_L6REQ },
 
-	{ "htx.nbblks",          smp_fetch_htx_nbblks,       0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx.size",            smp_fetch_htx_size,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx.data",            smp_fetch_htx_data,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx.used",            smp_fetch_htx_used,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx.free",            smp_fetch_htx_free,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx.free_data",       smp_fetch_htx_free_data,    0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx.has_eom",         smp_fetch_htx_has_eom,      0,            NULL,           SMP_T_BOOL,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.nbblks",          smp_fetch_htx_nbblks,       0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.size",            smp_fetch_htx_size,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.data",            smp_fetch_htx_data,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.used",            smp_fetch_htx_used,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.free",            smp_fetch_htx_free,         0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.free_data",       smp_fetch_htx_free_data,    0,            NULL,           SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx.has_eom",         smp_fetch_htx_has_eom,      0,            NULL,           SMP_T_BOOL,  SMP_USE_HRQHV|SMP_USE_HRSHV},
 
-	{ "htx_blk.type",        smp_fetch_htx_blk_type,     ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx_blk.size",        smp_fetch_htx_blk_size,     ARG1(1,STR),  val_blk_arg,    SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx_blk.start_line",  smp_fetch_htx_blk_stline,   ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx_blk.hdrname",     smp_fetch_htx_blk_hdrname,  ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx_blk.hdrval",      smp_fetch_htx_blk_hdrval,   ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
-	{ "htx_blk.val",         smp_fetch_htx_blk_val,      ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx_blk.type",        smp_fetch_htx_blk_type,     ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx_blk.size",        smp_fetch_htx_blk_size,     ARG1(1,STR),  val_blk_arg,    SMP_T_SINT,  SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx_blk.start_line",  smp_fetch_htx_blk_stline,   ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx_blk.hdrname",     smp_fetch_htx_blk_hdrname,  ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx_blk.hdrval",      smp_fetch_htx_blk_hdrval,   ARG1(1,STR),  val_blk_arg,    SMP_T_STR,   SMP_USE_HRQHV|SMP_USE_HRSHV},
+	{ "internal.htx_blk.val",         smp_fetch_htx_blk_val,      ARG1(1,STR),  val_blk_arg,    SMP_T_BIN,   SMP_USE_HRQHV|SMP_USE_HRSHV},
 
 	{ /* END */ },
 }};