feat: remove openldap dependencies from apisix

[kingluo]

Description

With lua-resty-ldap, apisix does not need openldap related dependencies anymore.

We could remove it in these files:

• .github/workflows/fuzzing-ci.yaml:53: sudo apt-get install -y git openresty curl openresty-openssl111-dev unzip make gcc libldap2-dev
• ci/centos7-ci.sh:26: git sudo openldap-devel which libxml2-devel openssl-devel libxslt-devel
• ci/common.sh:130: apt install -y cpanminus build-essential libncurses5-dev libreadline-dev libssl-dev perl libpcre3 libpcre3-dev libldap2-dev
• ci/performance_test.sh:25: apt-get -y install lua5.1 liblua5.1-0-dev libldap2-dev
• ci/pod/docker-compose.plugin.yml:148: openldap:
• docs/en/latest/building-apisix.md:94: brew install openldap
• t/chaos/utils/Dockerfile:34: openldap-dev
• utils/install-dependencies.sh:49: local common_dep="curl wget git gcc openresty-openssl111-devel unzip pcre pcre-devel openldap-devel"
• utils/install-dependencies.sh:87: sudo apt-get install -y git openresty curl openresty-openssl111-dev make gcc libpcre3 libpcre3-dev libldap2-dev unzip
• utils/install-dependencies.sh:93: brew install openresty/brew/openresty luarocks lua@5.1 wget curl git pcre openldap
• utils/linux-install-openresty.sh:51:sudo apt-get install "$openresty" openresty-openssl111-debug-dev libldap2-dev

We should also remove it in build-tools: https://github.com/api7/apisix-build-tools/blob/acedbc07990929efd066b1c25b53e09c6d0d085f/package-apisix.sh#L10

[tzssangglass]

LGTM

[hanf2x]

LGTM