ldap integration fails with selinux enabled.

[tiagom62]

Expected Behavior (or desired behavior if a feature request)

ldap integration should work

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Actual Behavior

ldap fails to connect when installed using install.sh because it does not set httpd_can_connect_ldap on

Need to modify install script to run "setsebool -P httpd_can_connect_ldap on"

Will modify, test and create a PR later today.

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Please confirm you have done the following before posting your bug report:

• I have enabled debug mode
• I have read checked the Common Issues page

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Please provide answers to these questions before posting your bug report:

• Version of Snipe-IT you're running
  v3.4.0-9-g67315d8
• What OS and web server you're running Snipe-IT on
  centos 7, apache
• What method you used to install Snipe-IT (install.sh, manual installation, docker, etc) installer.sh
• If you're getting an error in your browser, include that error
• What specific Snipe-IT page you're on, and what specific element you're interacting with to trigger the error
• If a stacktrace is provided in the error, include that too.
• Any errors that appear in your browser's error console.
• Confirm whether the error is reproduceable on the demo.
• Include any additional information you can find in app/storage/logs and your webserver's logs.
• Include what you've done so far in the installation, and if you got any error messages along the way.
• Indicate whether or not you've manually edited any data directly in the database