Move zstdgrep and zstdless tests to cli-tests (#3057)

* Move zstdgrep and zstdless tests to cli-tests

Co-authored-by: Binh Vo <binhvo@fb.com>

tests/cli-tests/cltools/setup

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+set -e
+
+echo "1234" > file
+zstd file

tests/cli-tests/cltools/zstdgrep.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+set -e
+
+println "+ good path"
+zstdgrep "1234" file file.zst
+println "+ bad path"
+zstdgrep "1234" bad.zst

tests/cli-tests/cltools/zstdgrep.sh.exit

@@ -0,0 +1 @@
+1

tests/cli-tests/cltools/zstdgrep.sh.stderr.exact

@@ -0,0 +1 @@
+zstd: can't stat bad.zst : No such file or directory -- ignored 

tests/cli-tests/cltools/zstdgrep.sh.stdout.glob

@@ -0,0 +1,4 @@
++ good path
+file:1234
+file.zst:1234
++ bad path

tests/cli-tests/cltools/zstdless.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+set -e
+
+println "+ good path"
+zstdless file.zst
+println "+ pass parameters"
+zstdless -N file.zst # This parameter does not produce line #s when piped, but still serves to test that the flag went to less and not zstd
+println "+ bad path"
+zstdless bad.zst

tests/cli-tests/cltools/zstdless.sh.stderr.exact

@@ -0,0 +1,2 @@
+zstd: can't stat bad.zst : No such file or directory -- ignored 
+bad.zst: No such file or directory

tests/cli-tests/cltools/zstdless.sh.stdout.glob

@@ -0,0 +1,5 @@
++ good path
+1234
++ pass parameters
+1234
++ bad path