feat(installer): add oidc scripts (#2194)

hack/oidc-scripts/README.md

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+# OIDC config and rollback scripts
+
+## How to use oidc.sh script
+`oidc.sh` script use to config the OIDC login.
+When the first tile use the `oidc.sh`.You should fill in the configuration file `oidc.conf`then execute the `oidc.sh`with the `oidc.conf`:
+```
+chmod +x oidc.sh
+./oidc.sh oidc.conf
+```
+After that,it will store the `oidc.conf` in configmap, you can check:
+```
+kubectl get cm -n tke oidc-config
+```
+Except for the first time，you can execute the script without the script:
+```
+./oidc.sh
+```
+## How to use rollback.sh script
+`rollback.sh` use to rollback OIDC login, after rollback you can use tkeanywhere to login.
+```
+chmod +x rollback.sh
+./rollback.sh
+```
+

hack/oidc-scripts/oidc.conf

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+ca_crt="/root/oidc/ca.crt"
+secret_id="123456"
+secret_key="123456"
+endpoint="oidc.cn"
+master_id="123456"
+username="oidc"
+issuer_url="https://oidc.cn/iamapp/api/v1/OIDC"
+hostnames="oidc.cn,iam-api.oidc.cn"
+tke_domain_name="tke.domain.name"