Update codeowners file (#1809)

.github/CODEOWNERS

@@ -6,21 +6,21 @@
 ###########
 
 # Catch all for non-code project files
-* @rickwinter @joshfree
+* @rickwinter
 
 # SDK team
-/sdk/ @ahsonkhan @antkmsft @rickwinter @vhvb1989
+/sdk/ @rickwinter
 
 # Samples
-/samples/ @rickwinter
+/samples/ @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
 
 # Service teams
 # Core
-sdk/docs/core/                @ahsonkhan @antkmsft @rickwinter @vhvb1989
-sdk/inc/azure/core/           @ahsonkhan @antkmsft @rickwinter @vhvb1989
-sdk/samples/core/             @ahsonkhan @antkmsft @rickwinter @vhvb1989
-sdk/src/azure/core/           @ahsonkhan @antkmsft @rickwinter @vhvb1989
-sdk/tests/core/               @ahsonkhan @antkmsft @rickwinter @vhvb1989
+sdk/docs/core/                @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
+sdk/inc/azure/core/           @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
+sdk/samples/core/             @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
+sdk/src/azure/core/           @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
+sdk/tests/core/               @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
 
 # IoT
 sdk/docs/iot/                 @CIPop @danewalton @ericwol-msft @ewertons @hihigupt @jspaith @momuno
@@ -30,7 +30,7 @@ sdk/src/azure/iot/            @CIPop @danewalton @ericwol-msft @ewertons @hihigu
 sdk/tests/iot/                @CIPop @danewalton @ericwol-msft @ewertons @hihigupt @jspaith @momuno
 
 # Platform
-sdk/src/azure/platform/       @ahsonkhan @antkmsft @rickwinter @vhvb1989
+sdk/src/azure/platform/       @ahsonkhan @antkmsft @rickwinter @vhvb1989 @gearama
 
 ###########
 # Eng Sys