Reflect #cg-platform being made private and promote priv-all

.github/ISSUE_TEMPLATE/onboard-any-team-member.md

@@ -91,7 +91,6 @@ The following cloud.gov channels are public and all team members are welcome to
 - [ ] `#cg-general` - program-level information and discussion
 - [ ] `#cg-offtopic` - off-topic team sharing
 - [ ] `#cg-platform-news` (🗣️) - bots post platform alerts (mostly CI job notifications)
-- [ ] `#cg-platform` - platform operations
 - [ ] `#cg-support` (🗣️) - support requests and assistance within TTS
 - [ ] `#cg-supportstream` (🗣️) - stream of activity on Zendesk tickets
 - [ ] `#cloud-gov` (🗣️) - bots post announcements here
@@ -100,6 +99,11 @@ Channels marked with (🗣️) receive a lot of messages, either from customers
 
 - [ ] Project contractors: Your buddy will add you to the private channel for your project.
 
+For federal employees and staff contractors:
+
+- [ ] `#cg-platform` - platform operations
+- [ ] `#cg-priv-all` - private channel for in-team discussion
+
 For federal employees only:
 
 - [ ] `#cg-priv-gov` - may contain discussion of contracting-related or other private, federal-employee-only comms

.github/ISSUE_TEMPLATE/onboard-compliance.md

@@ -53,7 +53,6 @@ Your onboarding buddy will add you to these Slack channels:
 - [ ] `#cg-billing` - private business development channel (if applicable)
 - [ ] `#cg-incidents` - private channel for incident response
 - [ ] `#cg-ops-banter` - private channel for operations/engineering banter
-- [ ] `#cg-priv-all` - private channel for in-team discussion
 - [ ] `#cg-priv-compliance` - private channel for security and compliance discussions
 
 </details>

.github/ISSUE_TEMPLATE/onboard-engineer.md

@@ -45,7 +45,6 @@ Your onboarding buddy will add you to these Slack channels:
 - [ ] `#cg-billing` - private business development channel (if applicable)
 - [ ] `#cg-incidents` - private channel for incident response
 - [ ] `#cg-ops-banter` - private channel for operations/engineering banter
-- [ ] `#cg-priv-all` - private channel for in-team discussion
 - [ ] `#cg-priv-compliance` - private channel for security and compliance discussions
 
 </details>

.github/ISSUE_TEMPLATE/onboard-support.md

@@ -54,7 +54,6 @@ Your onboarding buddy will add you to these Slack channels:
 - [ ] `#cg-aws-security` - private channel where bots post security notices
 - [ ] `#cg-incidents` - private channel for incident response
 - [ ] `#cg-ops-banter` - private channel for operations/engineering banter
-- [ ] `#cg-priv-all` - private channel for in-team discussion
 - [ ] `#cg-priv-compliance` - private channel for security and compliance discussions
 
 You will want to keep `#cg-support` unmuted so you are aware of requests from TTS-internal customers of cloud.gov.