REGTEST/MINOR: Add a reg testing file for 3e60b11.

Thank you to Daniel for having worked on this one.
diff --git a/reg-tests/stick-table/b00001.vtc b/reg-tests/stick-table/b00001.vtc
new file mode 100644
index 0000000..43e25eb
--- /dev/null
+++ b/reg-tests/stick-table/b00001.vtc
@@ -0,0 +1,70 @@
+# commit 3e60b11
+# BUG/MEDIUM: stick-tables: Decrement ref_cnt in table_* converters
+#
+# When using table_* converters ref_cnt was incremented
+# and never decremented causing entries to not expire.
+#
+# The root cause appears to be that stktable_lookup_key()
+# was called within all sample_conv_table_* functions which was
+# incrementing ref_cnt and not decrementing after completion.
+#
+# Added stktable_release() to the end of each sample_conv_table_*
+# function and reworked the end logic to ensure that ref_cnt is
+# always decremented after use.
+#
+# This should be backported to 1.8
+
+varnishtest "stick-tables: Test expirations when used with table_*"
+
+# As some macros for haproxy are used in this file, this line is mandatory.
+feature ignore_unknown_macro
+
+# Do nothing.
+server s1 {
+} -start
+
+haproxy h1 -conf {
+    # Configuration file of 'h1' haproxy instance.
+    defaults
+        mode   http
+        timeout connect         5s
+        timeout server          30s
+        timeout client          30s
+
+    frontend http1
+        bind "fd@${my_frontend_fd}"
+        stick-table size 1k expire 1ms type ip store conn_rate(10s),http_req_cnt,http_err_cnt,http_req_rate(10s),http_err_rate(10s),gpc0,gpc0_rate(10s),gpt0
+        http-request track-sc0 req.hdr(X-Forwarded-For)
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_http_req_cnt(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_trackers(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),in_table(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_bytes_in_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_bytes_out_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_conn_cnt(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_conn_cur(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_conn_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_gpt0(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_gpc0(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_gpc0_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_http_err_cnt(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_http_err_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_http_req_cnt(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_http_req_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_kbytes_in(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_kbytes_out(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_server_id(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_sess_cnt(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_sess_rate(http1) -m int lt 0  }
+        http-request redirect location https://${s1_addr}:${s1_port}/ if { req.hdr(X-Forwarded-For),table_trackers(http1) -m int lt 0  }
+    } -start
+
+client c1 -connect ${h1_my_frontend_fd_sock} {
+    txreq -url "/" -hdr "X-Forwarded-For: 127.0.0.1"
+    rxresp
+    expect resp.status == 503
+} -run
+
+haproxy h1 -cli {
+	send "show table http1"
+	expect ~ "table: http1, type: ip, size:1024, used:(0|1\\n0x[0-9a-f]*: key=127\\.0\\.0\\.1 use=0 exp=[0-9]* gpt0=0 gpc0=0 gpc0_rate\\(10000\\)=0 conn_rate\\(10000\\)=1 http_req_cnt=1 http_req_rate\\(10000\\)=1 http_err_cnt=0 http_err_rate\\(10000\\)=0)\\n$"
+} -wait