Disable static analysis and Mono tests by default (release-6.12.x) (#6761)

Author: jeffkl

eng/pipelines/ci.yml

@@ -41,7 +41,7 @@ parameters:
 - name: RunMonoTestsOnMac
   displayName: Run Mono tests on Mac
   type: boolean
-  default: true
+  default: false
 
 resources:
   pipelines:

eng/pipelines/pr.yml

@@ -30,7 +30,7 @@ parameters:
 - name: RunStaticAnalysis
   displayName: Run a static analysis
   type: boolean
-  default: true
+  default: false
 variables:
   DOTNET_NOLOGO: 1
   NUGET_EXPERIMENTAL_CHAIN_BUILD_RETRY_POLICY: 3,1000

eng/pipelines/pull_request.yml

@@ -37,7 +37,7 @@ parameters:
 - name: RunMonoTestsOnMac
   displayName: Run Mono tests on Mac
   type: boolean
-  default: true
+  default: false
 - name: RunStaticAnalysis
   displayName: Run static analysis
   type: boolean