MDEV-33837: Remove false-positive Bash warnings from

 lintian output

Lintian have many warnings that there is shebang '/bin/sh' which can
be populary /bin/bash or /bin/zsh but also many others like Ksh
or even Fish.

Warned lintian problems are testing that are run under Bash or some other
shell so they are or they are words in comments like let

 * I: mariadb-client: bash-term-in-posix-shell '`echo "testing\c"' [usr/bin/mariadb-secure-installation:191]
 * I: mariadb-server: bash-term-in-posix-shell '${BASH_VERSION' [usr/share/mysql/wsrep_notify:86]
 * I: mariadb-server: bash-term-in-posix-shell '[ "$url" ==' [usr/bin/mariadbd-safe:216]
 * I: mariadb-server: bash-term-in-posix-shell 'let' [usr/bin/mariadbd-safe:41]
 * I: mariadb-server: bash-term-in-posix-shell 'ulimit' [usr/bin/mariadbd-safe:712]
 * I: mariadb-server: bash-term-in-posix-shell 'ulimit' [usr/bin/mariadbd-safe:832]
 * I: mariadb-server-core: bash-term-in-posix-shell 'source tree,' [usr/bin/mariadb-install-db:93]
 * I: mariadb-test-data: bash-term-in-posix-shell '${BASH_VERSION' [usr/share/mysql/mysql-test/std_data/wsrep_notify.sh:87]
 * I: mariadb-test-data: bash-term-in-posix-shell '${BASH_VERSION' [usr/share/mysql/mysql-test/std_data/wsrep_notify_ssl.sh:87]

debian/mariadb-client.lintian-overrides

 # Mainly for BSD family to make sure that perl is found
 incorrect-path-for-interpreter /usr/bin/env perl != /usr/bin/perl [usr/bin/mytop]
+
+# Used to determine which shell we have. False-positive situation
+bash-term-in-posix-shell '`echo "testing\c"' [usr/bin/mariadb-secure-installation:191]

debian/mariadb-server-core.lintian-overrides

+# Bash word source used in comment
+bash-term-in-posix-shell 'source tree,' [usr/bin/mariadb-install-db:93]

debian/mariadb-server.lintian-overrides

+# Used to check if running in Bash
+bash-term-in-posix-shell '${BASH_VERSION' [usr/share/mysql/wsrep_notify:86]
+bash-term-in-posix-shell '[ "$url" ==' [usr/bin/mariadbd-safe:216]
+# In comment so false-positive
+bash-term-in-posix-shell 'let' [usr/bin/mariadbd-safe:41]
+# Supported in Zsh and Bash (also Dash)
+bash-term-in-posix-shell 'ulimit' [usr/bin/mariadbd-safe:712]
+bash-term-in-posix-shell 'ulimit' [usr/bin/mariadbd-safe:832]

debian/mariadb-test-data.lintian-overrides

@@ -8,6 +8,9 @@ incorrect-path-for-interpreter /usr/bin/env perl != /usr/bin/perl [usr/share/mys
 incorrect-path-for-interpreter /usr/bin/env perl != /usr/bin/perl [usr/share/mysql/mysql-test/suite/funcs_1/lib/DataGen_modify.pl]
 incorrect-path-for-interpreter /usr/bin/env perl != /usr/bin/perl [usr/share/mysql/mysql-test/suite/funcs_2/lib/gen_charset_utf8.pl]
 incorrect-path-for-interpreter /usr/bin/env perl != /usr/bin/perl [usr/share/mysql/mysql-test/suite/rpl/extension/checksum.pl]
+# This is used to check if we are running under Bash
+bash-term-in-posix-shell '${BASH_VERSION' [usr/share/mysql/mysql-test/std_data/wsrep_notify.sh:87]
+bash-term-in-posix-shell '${BASH_VERSION' [usr/share/mysql/mysql-test/std_data/wsrep_notify_ssl.sh:87]
 # These files are result files and they are supposed to be
 # Natial encoded (ISO/IEC 8859-1) not UTF-8
 national-encoding [usr/share/mysql/mysql-test/include/ctype_E05C.inc]